WordPress Errors Troubleshooting
Practical fixes for WordPress critical errors, database connection issues, and plugin conflicts. (12 Articles)
How to Fix "There Has Been a Critical Error on This Website" in WordPress
The generic message "There has been a critical error on this website" indicates an unhandled fatal PHP error triggered by an incompatible plugin update, corrupted theme code, or PHP memory exhaustion.
How to Fix WordPress "Error Establishing a Database Connection": Complete Guide
This classic WordPress error occurs when WordPress PHP files cannot authenticate or exchange data with the MySQL/MariaDB database server. The issue typically involves incorrect credentials in wp-config.php or corrupted database tables.
How to Fix the WordPress White Screen of Death (WSOD): Rapid Recovery Plan
The White Screen of Death (WSOD) occurs when a fatal PHP error occurs with display_errors disabled, causing the server to return an empty 200/500 HTTP response with 0 bytes of HTML.
How to Fix WordPress Stuck in Maintenance Mode: "Briefly Unavailable for Scheduled Maintenance"
When updating plugins or core files, WordPress creates a temporary ".maintenance" file in your root folder. If an update times out or is interrupted, the file remains, locking your site.
How to Fix WordPress REST API 404 Error and Site Health cURL 28 Timeout
The WordPress Block Editor (Gutenberg) and modern plugins rely heavily on the REST API endpoint (/wp-json/). If Apache fails to rewrite URLs or a security plugin blocks API requests, Site Health throws a 404 or cURL 28 error.
How to Fix WordPress "HTTP Error" When Uploading Images to Media Library
The cryptic red "HTTP error." when uploading an image in WordPress usually occurs when the PHP image processing engine (Imagick) runs out of memory while generating multiple responsive thumbnail sizes.
How to Fix WordPress Mixed Content Warnings: Complete HTTPS Padlock Fix
Even after installing an SSL certificate, browsers show an insecure exclamation mark instead of a padlock if post content, custom CSS, or header logos load via unencrypted "http://" links.
How to Fix "ERR_TOO_MANY_REDIRECTS" in WordPress: Complete Troubleshooting
The browser error "ERR_TOO_MANY_REDIRECTS" occurs when page A points to page B and page B points back to page A in an infinite loop. In WordPress, this is caused by mismatched site URLs, conflicting SSL redirects, or Cloudflare Flexible SSL.
How to Fix WordPress Permalinks Not Working (404 on All Pages Except Homepage)
When the homepage loads perfectly but clicking any post or page results in a 404 Not Found error, the web server is looking for physical files on disk instead of routing requests to index.php.
How to Repair Corrupted WordPress Database Tables via phpMyAdmin and SQL
When a database table crashes due to sudden server power loss or out-of-disk conditions, visitors see "One or more database tables are unavailable". Learn how to safely run repairs without dropping records.
How to Reset WordPress Admin Password via phpMyAdmin (MD5 Hash Method)
If you forgot your password and reset emails fail to send, you can directly update your administrator credentials in the MySQL database via phpMyAdmin.
How to Fix "Warning: Cannot Modify Header Information" in WordPress pluggable.php
When WordPress reports "Warning: Cannot modify header information - headers already sent by ... wp-includes/pluggable.php", the issue is never inside pluggable.php itself! It is caused by early whitespace in custom theme code.