Unreal Process has crashed: Unhandled Exception: 0xe06d7363

[InfraredLaser]

I'm getting this error when trying to boot up my UrdfSim environment from the Epic Games Launcher or through Visual Studio. I started up the environment through the above processes and it worked before. All of the sudden the environment crashes when trying to load it.

Platform: Windows 10, vs2017, Unreal 2.24.3

Below is the following error: LoginId:a434651d4fb6b6c0c52e0d9fed62d432 EpicAccountId:

Unhandled Exception: 0xe06d7363

UE4Editor_AirSim!nlohmann::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits,std::allocator >,bool,int64,unsigned int64,double,std::allocator,nlohmann::adl_serializer>::parser::expect() [d:\unreal projects\factorysim_urdf\plugins\airsim\source\airlib\include\common\common_utils\json.hpp:11607] UE4Editor_AirSim!nlohmann::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits,std::allocator >,bool,int64,unsigned int64,double,std::allocator,nlohmann::adl_serializer>::parser::parse_internal() [d:\unreal projects\factorysim_urdf\plugins\airsim\source\airlib\include\common\common_utils\json.hpp:11461] UE4Editor_AirSim!nlohmann::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits,std::allocator >,bool,int64,unsigned int64,double,std::allocator,nlohmann::adl_serializer>::parser::parse_internal() [d:\unreal projects\factorysim_urdf\plugins\airsim\source\airlib\include\common\common_utils\json.hpp:11462] UE4Editor_AirSim!nlohmann::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits,std::allocator >,bool,int64,unsigned int64,double,std::allocator,nlohmann::adl_serializer>::parser::parse_internal() [d:\unreal projects\factorysim_urdf\plugins\airsim\source\airlib\include\common\common_utils\json.hpp:11462] UE4Editor_AirSim!nlohmann::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits,std::allocator >,bool,int64,unsigned int64,double,std::allocator,nlohmann::adl_serializer>::parser::parse_internal() [d:\unreal projects\factorysim_urdf\plugins\airsim\source\airlib\include\common\common_utils\json.hpp:11462] UE4Editor_AirSim!nlohmann::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits,std::allocator >,bool,int64,unsigned int64,double,std::allocator,nlohmann::adl_serializer>::parser::parse() [d:\unreal projects\factorysim_urdf\plugins\airsim\source\airlib\include\common\common_utils\json.hpp:11384] UE4Editor_AirSim!msr::airlib::Settings::loadJSonString() [d:\unreal projects\factorysim_urdf\plugins\airsim\source\airlib\include\common\settings.hpp:64] UE4Editor_AirSim!ASimHUD::ASimHUD() [d:\unreal projects\factorysim_urdf\plugins\airsim\source\simhud\simhud.cpp:23] UE4Editor_CoreUObject UE4Editor_CoreUObject UE4Editor_CoreUObject UE4Editor_CoreUObject UE4Editor_Core UE4Editor_Core UE4Editor_Projects UE4Editor_Projects UE4Editor_Projects UE4Editor UE4Editor UE4Editor UE4Editor UE4Editor UE4Editor kernel32 ntdll

[InfraredLaser]

Looking through the call stack the error appears in a file "json.hpp". There seems to be a parse error, but I am not quite sure what is causing this. I checked online forums for similar issues, some of the fixes result in removing meshes/placed objects in the map. However, before the error starts, the editor loads up to 71% and then crashes.

@mitchellspryn any ideas on how I should go about fixing this issue?

Below is an image of the vs error.

[mitchellspryn]

My guess is you have an invalid json. One potential step is to look at the json string being passed in msr::airlib::Settings::loadJSonString, and use a tool like jsonlint to see if it's actually valid.

[InfraredLaser]

Ah I found my error. Looking into my settings.json file I noticed that there was a syntax issue. Fixing the issue allowed the environment to load properly. Thanks for the help @mitchellspryn !