Where can I find out what my error message means?

beginner has asked for the wisdom of the Perl Monks concerning the following question:

I got the following error message:

folder/filename.pm did not return a true value at (eval 8) line 3
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I have no idea what it means, please help!

I'm also wondering if there is a place that I can check what my error message mean in general?

Originally posted as a Categorized Question.

Comment on Where can I find out what my error message means? Download Code

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Re: Where can I find out what my error message means? by OeufMayo (Curate) on Mar 03, 2001 at 02:57 UTC
See the perldiag manpage, or run your program with the pragma 'use diagnostics' or with the Perl command-line option of '-Mdiagnostics'.	[reply]
Re: Where can I find out what my error message means? by I0 (Priest) on Mar 03, 2001 at 04:44 UTC
splain splain: Reading from STDIN folder/filename.pm did not return a true value at (eval 8) line 3 folder/filename.pm did not return a true value at (eval 8) line 3 (#1) (F) A required (or used) file must return a true value to indicate that it compiled correctly and ran its initialization code correctly. It's traditional to end such a file with a "1;", though any true value would do. See perlfunc/require.	[reply]