-------------------------------
WeBWorK has encountered warnings while processing your request. If this occured when viewing a problem, it was likely caused by an error or ambiguity in that problem. Otherwise, it may indicate a problem with the WeBWorK system itself. If you are a student, report these warnings to your professor to have them corrected. If you are a professor, please consult the warning output below for more information.
Warning messages
Use of uninitialized value in string ne at /usr/local/share/perl/5.22.1/Mail/Sender.pm line 317, line 10.Use of uninitialized value in string ne at /usr/local/share/perl/5.22.1/Mail/Sender.pm line 317, line 10.Use of uninitialized value in string ne at /usr/local/share/perl/5.22.1/Mail/Sender.pm line 321, line 10.Use of uninitialized value in string ne at /usr/local/share/perl/5.22.1/Mail/Sender.pm line 321, line 10.Use of uninitialized value in string ne at /usr/local/share/perl/5.22.1/Mail/Sender.pm line 317, line 11.Use of uninitialized value in string ne at /usr/local/share/perl/5.22.1/Mail/Sender.pm line 317, line 11.Use of uninitialized value in string ne at /usr/local/share/perl/5.22.1/Mail/Sender.pm line 321, line 11.Use of uninitialized value in string ne at /usr/local/share/perl/5.22.1/Mail/Sender.pm line 321, line 11.Use of uninitialized value $Mail::Sender::ver in concatenation (.) or string at /usr/local/share/perl/5.22.1/Mail/Sender.pm line 1235, line 11.