So updating from Kotlin 1.2.60 to 1.2.71, I have a Java class that implements a Java Interface but I'm getting

e: Supertypes of the following classes cannot be resolved. Please make sure you have the required dependencies in the classpath:

For my java class, but if I downgrade to 1.2.60 I'm not seeing this error. Anyone seen something like this?

I’m afraid we would need more context on this. Hard to tell anything without any code or description of where classes are defined, how they are referenced. Given that it is Java code, I wonder what Kotlin version has to do with this?