Software error:

Can't locate KatesCal.pm in @INC (you may need to install the KatesCal module) (@INC contains: /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.32.1 /usr/local/share/perl/5.32.1 /usr/lib/x86_64-linux-gnu/perl5/5.32 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl-base /usr/lib/x86_64-linux-gnu/perl/5.32 /usr/share/perl/5.32 /usr/local/lib/site_perl) at /kunden/homepages/0/d119502670/htdocs/cgi-bin/CalSchedule/signup.pl line 7.
BEGIN failed--compilation aborted at /kunden/homepages/0/d119502670/htdocs/cgi-bin/CalSchedule/signup.pl line 7.

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