[IMAP] unable to create folder Excessive white space

I am getting the following error (and have done for a number of months now) Any ideas how to cure it?

Thanks

Hello Peter, I’m afraid this might be dues to incorrect name of the folder, try to clear the folder name of whitespaces and try to remove it again, if you’re unable to remove it due to this error.

Hope this helps,

Thanks Paul

Unfortunately I can’t find the offending folder. Any ideas where it might be?

Based on the error the problematic folder is in your Trash, the problematic folder is described in the error.