I have configured local customer DB for OTRS and the customer can log in to the portal successfully. But if the customer tries to reset his/her password by means of the links that he receives through "New OTRS password request" email, he ends up with the following error:
Can't locate Kernel/Modules/CustomerLostPassword.pm in @INC (@INC contains: /opt/otrs/Custom /opt/otrs/Kernel/cpan-lib /opt/otrs/ /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vend..
The fact is that OTRS looks for a file that does not exist. Can someone help me to solve the problem?

Thank you in advance.