When I try to save the menu on my WordPress site, I get this error: Validation failed. ACF was unable to perform validation due to an invalid security nonce being provided.
And the menu doesn’t get saved.
The error you’re seeing usually happens because the security nonce used by WordPress has expired or is invalid. To fix it, try clearing your browser cache and cookies, then log out of WordPress and log back in to refresh the security token. If that doesn’t help, you may have a plugin conflict. Try deactivating plugins one by one, especially caching or security plugins, and see if the issue persists. Also, make sure your Advanced Custom Fields (ACF) plugin is up to date. You can find useful information on other WordPress solutions on this site.
