when debugging and looking at the values at a brea...

# getting-started

[y]

when debugging and looking at the values at a breakpoint, I often get Unable to evaluate the expression Cannot find source class for java.util.Map (or java.util.List , etc.) for everything that is a `Map`/`List`/etc.
only reindexing the project solves it, which is time consuming
what is the cause of this issue? can I prevent it?