not sending notifications

[user1]

Good afternoon OTrs does not send notifications when I take notes or answer tickets, etc. And this is what is in the logs.
Can't locate Kernel/Output/HTML/TicketZoom/1-Линия.pm in @INC (@INC contains: /opt/otrs/Custom /opt/otrs/Kernel/cpan-lib /opt/otrs/ /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/5.32 /usr/share/perl/5.32 /usr/local/lib/site_perl /etc/apache2) at /opt/otrs/Kernel/System/Main.pm line 86.

There was an error executing Execute() in Kernel::System::Console::Command::Maint::Email::MailQueue: Error: Message sending already in progress! Skipping...
Wed Feb 26 11:36:50 2025 (Europe/Moscow) error OTRS-CGI-77 Need module!