If you face HTTP Status of 500 error during Prestashop connection, it indicates that there's a server issue.
A 500 error is a client-server error, probably overloaded at that time or temporarily unavailable to handle our request.
The request is actually correctly sent from our side but your server can't register it due to this error.
In this case you should ask your technician to verify Logs and if there are some Blocks.
Done! 🎉