Linker command failed with exit code 1 (use -v to see invocation)

 Check the mute switch detector.

Redownload it because it might have gotten updated.

Precompiled headers are missing.

 Solution 

Remove the directory /Users/<username>/Library/Developer/Xcode/DerivedData/ModuleCache.noindex

Unity error java.lang.UnsupportedOperationException: This feature requires ASM7 See the Console for details.

 Fix - 

Go to Project/Library

and delete the "Bee" folder.

Unity app or game crashes on Android Emulator but runs on Device

This usually happens when the app is using Vulkan Graphics API

Fix it by moving Vulkan below OpenGLES3.