Hello there!
I have this message in the console:

Compiler may have been closed by interference from security software or install is missing files
Error while compiling: compiler version  disconnected​

The plugin do not load and there is no StackModifier.json

That error is not specific to any plugin and means that the compiler was not accessible. Make sure you do not have any other compiler processes running and that the compiler is accessible to the user running the server.

Yep, you are right. Thanks for the clarification, I have seen that Compiler.exe was stuck in memory for some reason and that caused the issue.