Failed to resolve Firebase.FirebaseApp Firebase.Auth.FirebaseUser

[imperialnymph]

Hi Miyu! Can I bother you with an issue I'm currently facing?

I can't build on release mode (it works on debug). I've tried excluding com.google.firebase.** on a proguard config file.

Plugin.FirebaseAuth 4.1.0 Xamarin.Firebase.Auth 120.0.1 Xamarin.Forms 4.8.0.1821 Xamarin.GooglePlayServices.Base 117.5.0 Xamarin.GooglePlayServices.Basement 117.5.0

/Library/Frameworks/Mono.framework/External/xbuild/Xamarin/Android/Xamarin.Android.Common.targets(5,5): Error XALNK7000: Mono.Linker.MarkException: Error processing method: 'System.Void Plugin.FirebaseAuth.UserWrapper/d__28::MoveNext()' in assembly: 'Plugin.FirebaseAuth.dll' ---> Mono.Cecil.ResolutionException: Failed to resolve Firebase.FirebaseApp Firebase.Auth.FirebaseUser::Zzc() at Mono.Linker.Steps.MarkStep.HandleUnresolvedMethod (Mono.Cecil.MethodReference reference) [0x00013] in <0d3a2268388448fdb90b4a54c411a87d>:0 at Mono.Linker.Steps.MarkStep.MarkMethod (Mono.Cecil.MethodReference reference) [0x00049] in <0d3a2268388448fdb90b4a54c411a87d>:0 at Mono.Linker.Steps.MarkStep.MarkInstruction (Mono.Cecil.Cil.Instruction instruction) [0x00040] in <0d3a2268388448fdb90b4a54c411a87d>:0 at Mono.Linker.Steps.MarkStep.MarkMethodBody (Mono.Cecil.Cil.MethodBody body) [0x000c2] in <0d3a2268388448fdb90b4a54c411a87d>:0 at Mono.Linker.Steps.MarkStep.ProcessMethod (Mono.Cecil.MethodDefinition method) [0x001b1] in <0d3a2268388448fdb90b4a54c411a87d>:0 at Mono.Linker.Steps.MarkStep.ProcessQueue () [0x0001b] in <0d3a2268388448fdb90b4a54c411a87d>:0 --- End of inner exception stack trace --- at Mono.Linker.Steps.MarkStep.ProcessQueue () [0x00047] in <0d3a2268388448fdb90b4a54c411a87d>:0 at Mono.Linker.Steps.MarkStep.ProcessPrimaryQueue () [0x0000a] in <0d3a2268388448fdb90b4a54c411a87d>:0 at Mono.Linker.Steps.MarkStep.Process () [0x000f6] in <0d3a2268388448fdb90b4a54c411a87d>:0 at Mono.Linker.Steps.MarkStep.Process (Mono.Linker.LinkContext context) [0x0000d] in <0d3a2268388448fdb90b4a54c411a87d>:0 at MonoDroid.Tuner.MonoDroidMarkStep.Process (Mono.Linker.LinkContext context) [0x0000b] in <0d3a2268388448fdb90b4a54c411a87d>:0 at Mono.Linker.Pipeline.ProcessStep (Mono.Linker.LinkContext context, Mono.Linker.Steps.IStep step) [0x0000d] in <0d3a2268388448fdb90b4a54c411a87d>:0 at Mono.Linker.Pipeline.Process (Mono.Linker.LinkContext context) [0x0000f] in <0d3a2268388448fdb90b4a54c411a87d>:0 at MonoDroid.Tuner.Linker.Run (Mono.Linker.Pipeline pipeline, Mono.Linker.LinkContext context) [0x00000] in <0d3a2268388448fdb90b4a54c411a87d>:0 at MonoDroid.Tuner.Linker.Process (MonoDroid.Tuner.LinkerOptions options, Mono.Linker.ILogger logger, Mono.Linker.LinkContext& context) [0x00071] in <0d3a2268388448fdb90b4a54c411a87d>:0 at Xamarin.Android.Tasks.LinkAssemblies.Execute (Java.Interop.Tools.Cecil.DirectoryAssemblyResolver res) [0x001dd] in <0d3a2268388448fdb90b4a54c411a87d>:0 at Xamarin.Android.Tasks.LinkAssemblies.RunTask () [0x0001b] in <0d3a2268388448fdb90b4a54c411a87d>:0 at Xamarin.Android.Tasks.AndroidTask.Execute () [0x00000] in <0d3a2268388448fdb90b4a54c411a87d>:0 (XALNK7000) (IKAMobile.Android)

Thank you!

[f-miyu]

The cause of the error is that you use Xamarin.Firebase.Auth 120.0.1. Please remove it.

[imperialnymph]

Thank you for responding, Miyu!

I've tried downgrading Xamarin.Firebase.Auth to earlier versions (120.0.0, 119.3, 119.2) but it still didn't work. I've also tried removing Xamarin.Firebase.Auth, still getting the same error :(

[imperialnymph]

Never mind!

I have resolved this issue by downgrading not only Xamarin.Firebase.Auth but also the Googleplayservices dependencies.. I must have updated them by mistake, not knowing that it's not yet compatible with the current version of Plugin.FirebaseAuth

Thank you Miyu for pointing me in the right direction!