logFileEnabled message causes ajax to send but not return success

Replies: 0

Hello,

If I have WP_DEBUG set to true in wp-config.php but none of the other logging constants than I get the error below in error_log in root of site;
[05-Oct-2016 22:38:47 UTC] PHP Notice: Undefined index: logfileEnabled in …/wp-content/plugins/contact-form-7-mailchimp-extension/lib/functions.php on line 260

If I set WP_DEBUG to false this goes away and ajax is successful.
Or if I set WP_DEBUG_LOG to true this also goes away and ajax is successful.

When I do get the error the email is sent it’s just the ajax response it never come back and I still see the loader gif.

Thanks