HTTP response status with 4xx error
- 1xx (Informational): The request was received, continuing process
- 2xx (Successful): The request was successfully received, understood and accepted
- 3xx (Redirection): Further action needs to be taken in order to complete the request
- 4xx (Client Error): The request contains bad syntax or cannot be fulfilled
- 5xx (Server Error): The server failed to fulfill an apparently valid request