I'm trying to install the mailchimp addon but are stuck on getting the error message above.

So far:

  • I've installed/enabled the module with version 7.x-4.0
  • Loaded the PHP Library to /sites/all/libraries/mailchimp
  • Added the API Key to /admin/config/services/mailchimp
  • Enabled the MailChimp Signup module

The error occurs after enabling the signup module and freezes the whole website with a blank screen even though error messages are being fully displayed. When I uninstall the signup module via drush and check the admin page for the service my API key is still set.

Any pointers what I'm doing wrong?

  • A blank white screen is indicative of some PHP error check your logs for what may caused the problem.
    – Shawn Conn
    Apr 19, 2016 at 2:11

2 Answers 2


Mistake: I've not correctly installed the mailchimp php library. Instead of showing this in the status report page the module crashes the website.


You need to create a MailChimp account, go to your account, choose Extras / API Keys. Copy and p[aste the API Key in the labeled field here: /admin/config/services/mailchimp

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