Java.lang.NoClassDefFoundError until I change and save a class


I have a problem with the SDK: Whenever I try to use a class I did not modify for a longer time I get a java.lang.NoClassDefFoundError. After I change something in the class and save it the error occurs for the next class. I do not really want to change and save all my classes so I would be happy if someone copuld tell me why this happens and what I can do against it.

Kind regards :slight_smile:

try find sdk’s cache and delete index folder, or close project and open it again…

Okay, thank you :slight_smile: