Undefined property: stdClass::$model in \public\frontend.php on line 187

Could you post the URL of your website?

Sure, [removed] but you cant see errors there since wp_debug is set to false. Since its an production enviroment.

Ok, thanks.

Could you try disabling the checkbox “Device data” in the settings of my plugin (Under Browser/Device/OS data)?

That solved it, thank you for the fast support.

I am going to try to add some more checks to the code to prevent such messages. Thanks for sending the bug report!