Q5: Why do I get a 500 Internal Server Error?

A 500 error usually indicates one of these problems:

1. Wrong permissions: Set script to 755
2. Wrong Perl path: Check the first line of the script:

   #!/usr/bin/perl

3. Syntax error: Test the script from command line:

   perl -c script.pl

4. Line ending issues: Upload in ASCII mode, not binary
5. Missing modules: Check if required Perl modules are installed