Can't locate Mysql.pm in @INC

Hello,
I have installed all the required software including mysql (created a separate database for AMET and userid as ametsecure) as it mentioned here : AMET/AMET_QuickStart_Guide_v14.md at master · USEPA/AMET · GitHub
My system also has ‘perl-DBD-MySQL’ installed.

But when I try to run a script it gives me following error:
[root@adeq scripts_db]# csh DEQaqProject_base_july.csh
Populating new AQ project. This will take some time…
/run/media/root/55A07B0360BDF544/postproc/AMET/perl/CAMx_species_list.pl
test
/run/media/root/55A07B0360BDF544/postproc/AMET/bin/sitecmp.exe
** load : T Populating database with site compare data for IMPROVE Network.**
Can’t locate Mysql.pm in @INC (@INC contains: /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5 .) at /run/media/root/55A07B0360BDF544/postproc/AMET/perl/AQ_add_aq2dbase.pl line 35.
BEGIN failed–compilation aborted at /run/media/root/55A07B0360BDF544/postproc/AMET/perl/AQ_add_aq2dbase.pl line 35.
Finished populating database for IMPROVE Network.

Please help