Software error:

Can't locate cgi-lib.pl in @INC (@INC contains:  /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.30.0 /usr/local/share/perl/5.30.0 /usr/lib/x86_64-linux-gnu/perl5/5.30 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl/5.30 /usr/share/perl/5.30 /usr/local/lib/site_perl /usr/lib/x86_64-linux-gnu/perl-base) at suchmausg.pl line 28.

For help, please send mail to the webmaster (webmaster@aetherische-oele.net), giving this error message and the time and date of the error.