I have been dealing with a particular error for a while now that spams the console but doesn't seem to hurt the project while running. I get this error when working with threads and manipulating nodes in the scene tree.
ERROR: remove: Condition ' p_elem->_root != this ' is true.
I have not bothered trying to fix this error as it didn't seem to do any harm on the project as it runs fine despite flooding the debug console but lately almost half the time immediately after running a project I get a crash with these additional errors:
Nothing read: No such file or directory
ERROR: read: Server disconnected!