The most common 5xx server errors

server returns a 5xx server error when it can't successfully complete a client's request.

The most common 5xx server errors are:

1. 500 – Internal Server Error

2. 502 – Bad Gateway 

3. 503 – Service Unavailable

4. 504 – Gateway Timeout

5. 509 – Bandwidth Limit Exceeded

6. 524 – A timeout occurred