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Fatal error: Uncaught TypeError: Return value of NinjaForms\Includes\Entities\NfSite::jsonSerialize() must be an instance of NinjaForms\Includes\Entities\mixed, array returned in /wp-content/plugins/ninja-forms/includes/Entities/NfSite.php:77
Errors started Mon, 26 Aug, 21:18
Ninja Forms version 3.8.13 – WordPress version: 6.6.1
Front end is working. Cannot log into back end.
Disabled Ninja forms. Able to log in again. Reinstalled Ninja forms. Same issue – unable to access backend – fatal error.
Rolled back to Ninja Forms 3.8.12 and all working ok again.
The page I need help with: [log in to see the link]