aaPanel PHP Version Switch Broke Your WordPress Database Connection
Switched PHP versions in aaPanel and WordPress now shows 'Error establishing a database connection'? It's almost always a missing extension, not lost data.
CATEGORY 05
Hosting & aaPanel
Practical guides for the hosting layer underneath your WordPress site.
GUIDES01 022026-07-22 032026-07-22 042026-07-22 052026-08-14 062026-07-22 072026-07-22 08SOON
The first troubleshooting paths.
2026-07-26
aaPanel Won't Renew Your Let's Encrypt SSL? Here's Why (and the Fix)
aaPanel's Let's Encrypt certificate stuck, expired, or failing to renew? Here's exactly why it happens on WordPress sites and the safe step-by-step fix.
Fix a WordPress 500 Internal Server Error on aaPanel (Step-by-Step)
WordPress showing a 500 Internal Server Error on aaPanel? Check the right logs first, then fix the four causes that actually cause it, in the safest order.
Is aaPanel's Firewall Blocking Your WordPress REST API? How to Check and Fix
Gutenberg won't save, or an app integration fails, on an aaPanel site? aaPanel's firewall/WAF may be blocking /wp-json/ requests — here's how to check and fix it.
The Complete Guide to Running WordPress on aaPanel
Setting up WordPress on aaPanel? The SSL, PHP version, Cloudflare, and firewall settings that actually matter — plus our 6 tested fixes for what breaks.
WordPress Redirect Loop After Adding Cloudflare on aaPanel? Fix It in 3 Steps
WordPress stuck in a redirect loop after putting Cloudflare in front of aaPanel? It's almost always mismatched SSL modes — here's the exact 3-step fix.
WordPress White Screen After Switching PHP Version in aaPanel? Do This
White screen right after changing PHP versions in aaPanel? Revert first, then find the real cause: a missing extension or an incompatible plugin.
How to Migrate a WordPress Site From Plesk to aaPanel Without Downtime
Article outline prepared. The complete tested guide will be published here.