build as Windows app fails

[Clasherzz]

facing installation issue . The error message shown is :

Launching lib\main.dart on Windows in debug mode...
windows/runner/flutter_window.cpp does not ensure the show window callback is called, updating.
windows/flutter/CMakeLists.txt does not use FLUTTER_TARGET_PLATFORM, updating.
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_app_desktop.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_app_desktop.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]     
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_log.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_log.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_app_options.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_app_options.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]     
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_app_common.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_app_common.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]       
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_mutex_windows.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_mutex_windows.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj] 
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_date_provider.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_date_provider.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj] 
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_heartbeat_controller_desktop.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_heartbeat_controller_desktop.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_log_stdio.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_log_stdio.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d3d7d08a438878e74aeb2cbaaedfc967_flatbuffers.dir_Debug_idl_parser.obj) : warning LNK4099: PDB 'flatbuffers.pdb' was not found with 'firebase_app.lib(d3d7d08a438878e74aeb2cbaaedfc967_flatbuffers.dir_Debug_idl_parser.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\flatbuffers.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_google_services_resource.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_google_services_resource.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_logger.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_logger.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_callback.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_callback.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_cleanup_notifier.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_cleanup_notifier.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_util.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_util.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_heartbeat_storage_desktop.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_heartbeat_storage_desktop.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_scheduler.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_scheduler.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_zlibwrapper.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_zlibwrapper.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]     
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_base64.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_base64.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_variant.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_variant.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_variant_util.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_variant_util.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]   
firebase_app.lib(d3d7d08a438878e74aeb2cbaaedfc967_flatbuffers.dir_Debug_util.obj) : warning LNK4099: PDB 'flatbuffers.pdb' was not found with 'firebase_app.lib(d3d7d08a438878e74aeb2cbaaedfc967_flatbuffers.dir_Debug_util.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\flatbuffers.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_reference_counted_future_impl.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_reference_counted_future_impl.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_filesystem_desktop_windows.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_filesystem_desktop_windows.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_thread_cpp11.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_thread_cpp11.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]   
firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_deflate.obj) : warning LNK4099: PDB 'zlibstaticd.pdb' was not found with 'firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_deflate.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\zlibstaticd.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_inflate.obj) : warning LNK4099: PDB 'zlibstaticd.pdb' was not found with 'firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_inflate.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\zlibstaticd.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_crc32.obj) : warning LNK4099: PDB 'zlibstaticd.pdb' was not found with 'firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_crc32.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\zlibstaticd.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_gzipheader.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_gzipheader.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]       
firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_adler32.obj) : warning LNK4099: PDB 'zlibstaticd.pdb' was not found with 'firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_adler32.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\zlibstaticd.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_zutil.obj) : warning LNK4099: PDB 'zlibstaticd.pdb' was not found with 'firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_zutil.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\zlibstaticd.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_trees.obj) : warning LNK4099: PDB 'zlibstaticd.pdb' was not found with 'firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_trees.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\zlibstaticd.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_inftrees.obj) : warning LNK4099: PDB 'zlibstaticd.pdb' was not found with 'firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_inftrees.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\zlibstaticd.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_inffast.obj) : warning LNK4099: PDB 'zlibstaticd.pdb' was not found with 'firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_inffast.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\zlibstaticd.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d3d7d08a438878e74aeb2cbaaedfc967_flatbuffers.dir_Debug_idl_parser.obj) : error LNK2019: unresolved external symbol __std_find_trivial_8 referenced in function "struct f_b_flatbuffers::StructDef * * __cdecl __std_find_trivial<struct f_b_flatbuffers::StructDef *,unsigned __int64>(struct f_b_flatbuffers::StructDef * *,struct f_b_flatbuffers::StructDef * *,unsigned __int64)" (??$__std_find_trivial@PEAUStructDef@f_b_flatbuffers@@_K@@YAPEAPEAUStructDef@f_b_flatbuffers@@PEAPEAU01@0_K@Z) [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_cleanup_notifier.obj) : error LNK2001: unresolved external symbol __std_find_trivial_8 [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_heartbeat_storage_desktop.obj) : error LNK2019: unresolved external symbol __std_find_trivial_1 referenced in function "char const * __cdecl __std_find_trivial<char const ,unsigned char>(char const *,char const *,unsigned char)" (??$__std_find_trivial@$$CBDE@@YAPEBDPEBD0E@Z) [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
C:\hp\zulip-flutter\build\windows\x64\runner\Debug\zulip.exe : fatal error LNK1120: 2 unresolved externals [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
Building Windows application...                                   371.5s
Error: Build process failed.
PS C:\hp\zulip-flutter> flutter run
Launching lib\main.dart on Windows in debug mode...
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_app_desktop.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_app_desktop.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_log.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_log.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_app_options.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_app_options.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_app_common.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_app_common.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_mutex_windows.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_mutex_windows.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_date_provider.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_date_provider.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj] 
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_heartbeat_controller_desktop.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_heartbeat_controller_desktop.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_log_stdio.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_log_stdio.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d3d7d08a438878e74aeb2cbaaedfc967_flatbuffers.dir_Debug_idl_parser.obj) : warning LNK4099: PDB 'flatbuffers.pdb' was not found with 'firebase_app.lib(d3d7d08a438878e74aeb2cbaaedfc967_flatbuffers.dir_Debug_idl_parser.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\flatbuffers.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_google_services_resource.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_google_services_resource.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_logger.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_logger.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_callback.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_callback.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_cleanup_notifier.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_cleanup_notifier.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_util.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_util.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_heartbeat_storage_desktop.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_heartbeat_storage_desktop.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_scheduler.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_scheduler.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_zlibwrapper.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_zlibwrapper.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]     
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_base64.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_base64.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_variant.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_variant.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_variant_util.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_variant_util.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]   
firebase_app.lib(d3d7d08a438878e74aeb2cbaaedfc967_flatbuffers.dir_Debug_util.obj) : warning LNK4099: PDB 'flatbuffers.pdb' was not found with 'firebase_app.lib(d3d7d08a438878e74aeb2cbaaedfc967_flatbuffers.dir_Debug_util.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\flatbuffers.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_reference_counted_future_impl.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_reference_counted_future_impl.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_filesystem_desktop_windows.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_filesystem_desktop_windows.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_thread_cpp11.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_thread_cpp11.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]   
firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_deflate.obj) : warning LNK4099: PDB 'zlibstaticd.pdb' was not found with 'firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_deflate.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\zlibstaticd.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_inflate.obj) : warning LNK4099: PDB 'zlibstaticd.pdb' was not found with 'firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_inflate.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\zlibstaticd.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_crc32.obj) : warning LNK4099: PDB 'zlibstaticd.pdb' was not found with 'firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_crc32.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\zlibstaticd.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_gzipheader.obj) : warning LNK4099: PDB 'firebase_app.pdb' was not found with 'firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_gzipheader.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\firebase_app.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]       
firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_adler32.obj) : warning LNK4099: PDB 'zlibstaticd.pdb' was not found with 'firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_adler32.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\zlibstaticd.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_zutil.obj) : warning LNK4099: PDB 'zlibstaticd.pdb' was not found with 'firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_zutil.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\zlibstaticd.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_trees.obj) : warning LNK4099: PDB 'zlibstaticd.pdb' was not found with 'firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_trees.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\zlibstaticd.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_inftrees.obj) : warning LNK4099: PDB 'zlibstaticd.pdb' was not found with 'firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_inftrees.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\zlibstaticd.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_inffast.obj) : warning LNK4099: PDB 'zlibstaticd.pdb' was not found with 'firebase_app.lib(f6e938409d15d4e67858d89bcb981e00_zlibstatic.dir_Debug_inffast.obj)' or at 'C:\hp\zulip-flutter\build\windows\x64\runner\Debug\zlibstaticd.pdb'; linking object as if no debug info [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d3d7d08a438878e74aeb2cbaaedfc967_flatbuffers.dir_Debug_idl_parser.obj) : error LNK2019: unresolved external symbol __std_find_trivial_8 referenced in function "struct f_b_flatbuffers::StructDef * * __cdecl __std_find_trivial<struct f_b_flatbuffers::StructDef *,unsigned __int64>(struct f_b_flatbuffers::StructDef * *,struct f_b_flatbuffers::StructDef * *,unsigned __int64)" (??$__std_find_trivial@PEAUStructDef@f_b_flatbuffers@@_K@@YAPEAPEAUStructDef@f_b_flatbuffers@@PEAPEAU01@0_K@Z) [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_cleanup_notifier.obj) : error LNK2001: unresolved external symbol __std_find_trivial_8 [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
firebase_app.lib(d94e1bff3c0e8414a6679ea91c3e103e_firebase_app.dir_Debug_heartbeat_storage_desktop.obj) : error LNK2019: unresolved external symbol __std_find_trivial_1 referenced in function "char const * __cdecl __std_find_trivial<char const ,unsigned char>(char const *,char const *,unsigned char)" (??$__std_find_trivial@$$CBDE@@YAPEBDPEBD0E@Z) [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
C:\hp\zulip-flutter\build\windows\x64\runner\Debug\zulip.exe : fatal error LNK1120: 2 unresolved externals [C:\hp\zulip-flutter\build\windows\x64\runner\zulip.vcxproj]
Building Windows application...                                    31.8s
Error: Build process failed.

Please explain the issue behind this

[gnprice]

It looks like you're trying to run the app as a Windows app.

This app is intended for use on mobile platforms, specifically Android and iOS. See discussion in the README: https://github.com/zulip/zulip-flutter#desktop-support

If you're eager to get the app running on Windows, and you'd like to debug this issue yourself, we'd accept a clean PR to fix it. But it's not something the core team will be able to spend time to debug.

If your interest is in contributing to the app generally, I recommend running it as an Android app (or an iOS app).

When running the app on Android, your Windows machine should work fine as the development environment. If you run into trouble there, that is a supported configuration and we'd be happy to help debug. For the most efficient response, start a thread in #mobile-team on chat.zulip.org.

[Clasherzz]

ohh i see now.I will try to contribute into this