ErrorRescue Team The message “There has been a critical error on this website” appears when WordPress encounters a fatal PHP error. The system stops execution to prevent further damage. This error often appears after installing plugins, updating themes, or changing server settings. The good news is that the issue is usually easy to diagnose and fix. Quick … Read more
Memory Exhausted Error occurs when a script tries to use more memory than the server allows. When this happens, PHP stops execution to prevent the server from running out of resources. The error is common in WordPress and other PHP applications. It usually appears after installing heavy plugins, running complex scripts, or processing large files. … Read more
403 Forbidden WordPress means the server understands the request but refuses to allow access. The page exists, but the server blocks the request due to permission or security restrictions. This error often appears after changes to plugins, security settings, file permissions, or server configuration. Quick Fix Reload the page and clear browser cache. Check WordPress … Read more
White Screen of Death (WSOD) appears when a website loads a completely blank page. No error message. No content. Just a white screen. This usually happens when the server encounters a fatal error but cannot display it. In WordPress and other PHP applications, the most common causes are plugin conflicts, memory limits, or broken code. … Read more
Error Establishing Database Connection means the website cannot connect to its database server. The application loads, but it fails before retrieving the data needed to generate the page. This error is common in database-driven platforms such as WordPress. In most cases the cause is incorrect database credentials, a crashed database service, or server resource limits. … Read more
Upstream Timeout Error occurs when a proxy or gateway server waits too long for a response from an upstream server. The request reaches the gateway successfully, but the backend service does not respond within the configured timeout period. When that limit is exceeded, the gateway stops waiting and returns a timeout error. Quick Fix Reload … Read more
500 Internal Server Error means the server failed while processing the request. The request reached the server successfully, but something inside the application or server configuration broke. The error is intentionally generic. It indicates that the server encountered an unexpected condition and could not return a valid response. Quick Fix Reload the page after a … Read more
504 Gateway Timeout means a server acting as a gateway or proxy did not receive a response from the upstream server in time. The request reaches the gateway server, but the backend service takes too long to respond. When the timeout limit is exceeded, the gateway stops waiting and returns a 504 error. Quick Fix … Read more
502 Bad Gateway appears when a server acting as a gateway or proxy receives an invalid response from an upstream server. The request reaches the gateway, but the backend service fails to respond correctly. As a result, the browser cannot load the page. Quick Fix Reload the page after a few seconds. Clear browser cache … Read more
503 Service Unavailable means the server is running but cannot process the request right now. The web server is reachable, but the application or backend service is temporarily unable to respond. This error usually appears during traffic spikes, maintenance, or backend failures. Quick Fix Reload the page after a few seconds. Check server CPU and … Read more
