Internal Server Error

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[29375]ERR: 24: Error in Perl code: install_driver(mysql) failed: Can't locate DBD/mysql.pm in @INC (you may need to install the DBD::mysql module) (@INC contains: /home/mobil/mobil/cgi-bin/bibeln/lib /etc/perl /usr/local/lib/i386-linux-gnu/perl/5.26.1 /usr/local/share/perl/5.26.1 /usr/lib/i386-linux-gnu/perl5/5.26 /usr/share/perl5 /usr/lib/i386-linux-gnu/perl/5.26 /usr/share/perl/5.26 /usr/local/lib/site_perl /usr/lib/i386-linux-gnu/perl-base) at (eval 37) line 3.
    Perhaps the DBD::mysql perl module hasn't been fully installed,
    or perhaps the capitalisation of 'mysql' isn't right.
    Available drivers: DBM, ExampleP, File, Gofer, Mem, Proxy, Sponge.
     at /home/mobil/mobil/includes/init.epl line 19.
[29375]ERR: 24: Error in Perl code: Can't call method "selectrow_array" on an undefined value at /home/mobil/mobil/search_result_r.epl line 58.

thttpd/2.25b 29dec2003 Embperl 2.5.0 [Wed Oct 16 03:47:09 2019]