Android Failed to instantiate one or more classes

Question

I have a running project and all the xml files are showing me the error message Android Failed to instantiate one or more classes. The program still works.

Answer 1

In the build.gradle (Module: app) change the implementation of appcompat to a previous version by searching the developer.google

This is an error in the android framework usually happens in the alpha and beta appcompat versions.

Hope this helps.