Xamarin.Android warning XA0125

Visual Studio Window

1. Go to Properties > Build > Advanced in the project property pages.
2. Change Debugging information to Portable.

Visual Studio Mac

1. Go to Build > Compiler > Debug information in the project property pages.
2. Change Debug information to Portable.

If the problematic symbol file comes from a NuGet package, update to a newer version of the package or notify the library author.