What is this? New error in a blank project:
Errors during XML parse:
0x00007ffef99a44cd (Unity) StackWalker::ShowCallstack
0x00007ffef99abd69 (Unity) GetStacktrace
0x00007ffefb124e99 (Unity) DebugStringToFile
0x00007ffef8b0df8c (Unity) DebugLogHandler_CUSTOM_Internal_Log
0x00000192fed2a28e (Mono JIT Code) (wrapper managed-to-native) UnityEngine.DebugLogHandler:Internal_Log_Injected (UnityEngine.LogType,UnityEngine.LogOption,UnityEngine.Bindings.ManagedSpanWrapper&,intptr)
0x00000192fed2a093 (Mono JIT Code) UnityEngine.DebugLogHandler:Internal_Log (UnityEngine.LogType,UnityEngine.LogOption,string,UnityEngine.Object)
0x00000192fed29d4b (Mono JIT Code) UnityEngine.DebugLogHandler:LogFormat (UnityEngine.LogType,UnityEngine.Object,string,object[])
0x00000192fed291ce (Mono JIT Code) UnityEngine.Logger:Log (UnityEngine.LogType,object)
0x000001932ecc62cd (Mono JIT Code) UnityEngine.Debug:LogWarning (object)
0x000001932ecc551b (Mono JIT Code) UnityEditor.Android.AndroidSDKTools:DetectErrorsAndWarnings (string,string,string[])
0x000001932ec1feeb (Mono JIT Code) UnityEditor.Android.AndroidSDKTools:RunAndroidSdkTool (string,string,bool,string,string,string[])
0x000001932ec1f6d3 (Mono JIT Code) UnityEditor.Android.AndroidSDKTools:ListComponentsVersions ()
0x000001932ec1ee03 (Mono JIT Code) UnityEditor.Android.SDKManager:UpdatePackagesList ()
0x000001932ec1e0fb (Mono JIT Code) UnityEditor.Android.SDKManager:ListAvailable (UnityEditor.Android.SDKManager/Component)
0x000001932ec1d28b (Mono JIT Code) UnityEditor.Android.PlayerSettingsEditorExtension/<>c__DisplayClass133_0:<StartGettingReleasedAPILevels>b__0 ()
0x000001925e587872 (Mono JIT Code) System.Threading.ThreadHelper:ThreadStart_Context (object)
0x000001925e5862fe (Mono JIT Code) System.Threading.ExecutionContext:RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool)
0x000001925e58526b (Mono JIT Code) System.Threading.ExecutionContext:Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool)
0x000001925e585093 (Mono JIT Code) System.Threading.ExecutionContext:Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object)
0x000001925e584dab (Mono JIT Code) System.Threading.ThreadHelper:ThreadStart ()
0x000001924867cd68 (Mono JIT Code) (wrapper runtime-invoke) object:runtime_invoke_void__this__ (object,intptr,intptr,intptr)
0x00007ffef46169de (mono-2.0-bdwgc) mono_jit_runtime_invoke (at C:/build/output/Unity-Technologies/mono/mono/mini/mini-runtime.c:3445)
0x00007ffef45584a4 (mono-2.0-bdwgc) do_runtime_invoke (at C:/build/output/Unity-Technologies/mono/mono/metadata/object.c:3068)
0x00007ffef455ba1a (mono-2.0-bdwgc) mono_runtime_delegate_try_invoke (at C:/build/output/Unity-Technologies/mono/mono/metadata/object.c:4452)
0x00007ffef458811d (mono-2.0-bdwgc) start_wrapper_internal (at C:/build/output/Unity-Technologies/mono/mono/metadata/threads.c:1296)
0x00007ffef45882de (mono-2.0-bdwgc) start_wrapper (at C:/build/output/Unity-Technologies/mono/mono/metadata/threads.c:1348)
0x00007fff9aca257d (KERNEL32) BaseThreadInitThunk
0x00007fff9bb0aa48 (ntdll) RtlUserThreadStart
And the same: Additionally, the fallback loader failed to parse the XML.