Man pages matching name catalyst::plugin::customerrormessage in section 3pm:

Catalyst::Plugin::CustomErrorMessage.3pm.en	debian 10 / libcatalyst-plugin-customerrormessage-perl
Catalyst::Plugin::CustomErrorMessage.3pm.en	debian 11 / libcatalyst-plugin-customerrormessage-perl
Catalyst::Plugin::CustomErrorMessage.3pm.en	debian 12 / libcatalyst-plugin-customerrormessage-perl