Thanks for all the comments. I have considered each of them. I don't think i have access to the server logs for the server i am working on, so i can't check the exact perl error when i get an internal server error. Where should these logs be? When i applied jberts first example example all cases work fine except when an incorrect username and password are entered. In that case i get an internal server error.

if($username eq $row[0] && $hashPassword eq $row[1]) {
     # Go to the new page
  }
  else {
    error();
  }
[download]

Using the second example i am given access to the next page with the correct user name and an incorrect password. Does anyone know why this is happening?

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