Loco Translate: File modification is disallowed by your WordPress config.

On some WordPress installations Loco Translate may forbid the editing of language files by giving you a warning “Locked: File modification is disallowed by your WordPress config.“. This usually happens when you’ve used the constant DISALLOW_FILE_MODS in your WordPress configuration file (wp-config.php) to disallow any modifications in the files of your website.

In order to fix this issue, please add this code snippet to your theme functions.php file or place it in a must-use plugin:

<?php
add_filter('file_mod_allowed', function($allow_file_mod, $context){
  if(in_array($context, ['download_language_pack'])){
    return true;
  }
  return $allow_file_mod;
}, 10, 2);
?>