I am getting this error in a C++ repl on an older version of Firefox and Chrome. Tested both.

Hey thanks for reporting this. We're looking into this on our side and will keep you updated as soon as we get a fix out.

I am seeing the same error screen when I try to delete a file from within my code. The file gets deleted but then right after that, I get this same error -

This Plugin Crashed!

Error: CustomSentryError: unable to perform file state transition: unknown file