Problem

The 'Illegal characters in path' error occurs when trying to save a file with a filename that contains invalid characters.

Solution

Check the file path and make sure it does not contain any invalid characters.

The list of invalid characters can vary depending on the operating system you are using, but typically includes characters such as \ / : *? ' |.

If you find any invalid characters in the file path, remove them, or replace them with valid characters. Once you have updated the file path, try saving the file again.