Tag
Finding the actual cause when WordPress breaks.
Troubleshooting
Check whether the database server is available, verify wp-config.php credentials, test the connection and repair tables only when corruption is actually reported.
Troubleshooting
A WordPress 500 error is a server-side failure. Find its log entry first, then test plugins, the active theme, rewrite rules, PHP limits and core files in a safe order.
Troubleshooting
Recover a blank WordPress site by checking Recovery Mode and error logs first, then isolating plugins, the active theme, memory exhaustion and damaged core files.