500 Internal Server Error
401 Unauthorised
400 Bad Request
403 Forbidden
404 Not Found
501 Not Implemented
502 Service Temporarily Overloaded
503 Service Unavailable
Connection Refused by Host
File Contains No Data
Cannot Add Form Submission Result to Bookmark List
Helper Application Not Found
TCP Error Encountered While Sending Request to Server
Failed DNS Look-Up
408 – Request Time-Out
https://blog.pixelfish.com.au/most-common-website-errors
500 Internal Server Error 401 Unauthorised 400 Bad Request 403 Forbidden 404 Not Found 501 Not Implemented 502 Service Temporarily Overloaded 503 Service Unavailable Connection Refused by Host File Contains No Data Cannot Add Form Submission Result to Bookmark List Helper Application Not Found TCP Error Encountered While Sending Request to Server Failed DNS Look-Up 408 – Request Time-Out