Hey, I have correctly installed the Email Forms Extension and have my MailChimp API - copied and pasted into the API field, only to get this when I try to Activate or Refresh the lists. I do get the message that my API Key is valid. I am using X-Pro on Local by Flywheel Development platform.
The message I get is:
Warning: array_key_exists() expects parameter 2 to be array, boolean given in /app/public/wp-content/plugins/tco-email-forms/email-mailchimp/functions/provider.php on line 176 Warning: Invalid argument supplied for foreach() in /app/public/wp-content/plugins/tco-email-forms/email-mailchimp/functions/provider.php on line 272 Warning: Invalid argument supplied for foreach() in /app/public/wp-content/plugins/tco-email-forms/email-mailchimp/functions/provider.php on line 300