Compilation failed in require when using "use" in Perl

Compilation failed in require when using "use" in Perl

I am using Perl in Eclipse.
In the same directory, I have a .pl file and two .pm files (pmFile1.pm,
pmFile2.pm).
At the top of the .pl file, I use the command:
use pmFile1;
use pmFile2;
I get an error "Compilation failed in require". I do not believe I had
this error earlier. I have researched this error online, and cannot figure
out what may have caused it, because I have not found a similar situation
to mine that caused the error. I do not know what other information would
be pertinent to include, but will add anything if asked...
Thank you.