When discussing 5xx errors, we are referring to a class of status codes that are returned by a server to indicate that something has gone wrong on the server’s side. These errors fall within the range of 500 to 599 and are part of the HTTP response status codes that are standardized by the Internet Assigned Numbers Authority (IANA). A 5xx error suggests that the server has encountered an unexpected condition that prevented it from fulfilling the request made by the client. This category includes several specific errors, such as the 500 Internal Server Error, which is a general catch-all response for server-side issues, the 501 Not Implemented error, indicating that the server does not support the functionality required to fulfill the request, the 502 Bad Gateway error, which occurs when one server on the internet receives an invalid response from another server, the 503 Service Unavailable error, which means the server is currently unable to handle the request due to temporary overloading or maintenance, and the 504 Gateway Timeout error, indicating that one server did not receive a timely response from another server or some intermediary. Unlike client-side errors (4xx), 5xx errors imply that the client’s request was valid, but the server failed to complete the request successfully. Understanding these errors is crucial for website administrators and developers as they need to troubleshoot and resolve such issues to maintain a smooth and accessible online service for users.