PHP fatal error – what does it mean?

PHP script crashed (plugin, theme, outdated PHP version). Error line in error.log – often wp-content/plugins/...

Allowed memory size exhausted?

Increase memory_limit in Plesk (256M or 512M). Often caused by bad WordPress plugin or import.

Where to find PHP errors in Plesk?

Plesk → domain → logs → error log. Or wp-content/debug.log if WP_DEBUG_LOG enabled.

Fix PHP Errors – Fatal Error, Memory Exhausted & Plesk

Quick answer: PHP errors: read error log, increase memory_limit (256M–512M), disable faulty plugin/theme and check PHP version in Plesk.

If you landed here: Site shows PHP error message, white screen with fatal error or HTTP 500 after update.

Error → fix

Error	Fix
Fatal error in plugin.php	Disable plugin via FTP
Memory exhausted	memory_limit 512M
Parse error	Switch PHP version (8.1/8.2)

White screen / HTTP 500
502 Bad Gateway
PHP versions

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Fix PHP Errors – Fatal Error, Memory Exhausted & Plesk

Error → fix

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