PHP Warning: Module already loaded in Unknown on line 0

This error message usually indicates that a PHP module is being included more than once in a PHP script. This can happen if the module is included multiple times in the same script, or if it is included in multiple scripts that are being used in the same request. To fix this error, you should make sure that the module is only included once in your PHP code.

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There are a few different ways you can do this:

1. Use the include_once or require_once functions to include the module. These functions will ensure that the module is only included once, even if it is called multiple times.

2. Check if the module has already been included before attempting to include it. You can do this using the function_exists function:

<?php

if (!function_exists('module_function')) {
  include 'module.php';
}

3. Use an autoloader to automatically include the module when it is needed. An autoloader is a function that is called whenever a PHP class or function is used that has not yet been defined. You can use an autoloader to automatically include the module whenever it is needed, rather than having to manually include it in your code.

I hope this helps! Let me know if you have any questions or need further clarification.