I didn't question the access to the module. I questioned the access to the library. The mysql library, which is used by the Perl module. Does your OS require proper setting of the LD_LIBRARY_PATH or LD_RUN_PATH environment variable?

It is of course possible a module isn't correctly configured, but neither the error message, nor the fact it runs fine from the command line (with a different UID?) suggests that.

Abigail