Zend OPcache API is restricted by "restrict_api" configuration directive

Known Error

Published on Oct 16, 2021 · Updated on Nov 8, 2026

The error Zend OPcache API is restricted by "restrict_api" configuration directive can appear when October CMS tries to use the OPcache internals.

Solution

Set the force_bytecode_invalidation configuration to false in the config/cms.php file to stop it.

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