Hi,
This is indeed a unicode error with the accent character.
https://www.fileformat.info/info/unicode/char/0301/index.htm
I guess somehow a character with an accent has got into the project.
The fix is clunky - analysis project files are stored in plain text XML format so you can use a text editor to find and remove the offending character. Do make a safe archive (e.g. tar.gz on linux/mac .zip on windows) of your project before you attempt this in case you break it.
Do let us know where you find the rogue character of get in touch if you can’t solve the problem.
Brian