PHP Notice: Undefined index Internal Server Error 500

Good afternoon,

The plugin has an error and stopping TranslatePress from working. It is showing an error like this:

PHP Notice: Undefined index: Global in xxx/wp-content/plugins/woo-advanced-shipment-tracking/includes/class-wc-advanced-shipment-tracking.php on line 196

This is maybe a good idea to check all of the global variables and fix them.

This error is stopping TranslatePress and showing Internal Server Error 500. We have deleted the plugin and everything started to work normally.

Hope you solve this because your plugin is a great one.

Thank you.