You need to start looking at the error log of the webserver, if you're using CGI consider CGI::Carp. If you are starting from scratch I suggest looking at Mojolicious::Lite rather than CGI, see the documentation of the latter for some reasons why.

In reply to Re^5: cgi and own modules causing unspecified error by marto
in thread cgi and own modules causing unspecified error by amitsq

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