Running WW2.17 on Ubuntu 20.04
When attaching a file via "Email Instructor", the following error is reported back (and no attachment is sent).
Use of uninitialized value in multiplication (*) at /opt/webwork/webwork2/lib/WeBWorK/ContentGenerator/Feedback.pm line 256.
The entries in the corresponding section of the local Feedback.pm seem to be the same as those in https://github.com/openwebwork/webwork2/blob/main/lib/WeBWorK/ContentGenerator/Feedback.pm
Help would be most appreciated. Thanks.