Mailchimp and Forms Dashboard Bug

Hi,

I'm getting the following error for perch_mailchimp and perch_forms apps:

: Uncaught Error: [] operator not supported for strings in /.../addons/apps/perch_mailchimp/dashboard.php:55 Stack trace: #0 /.../public/system/core/dashboard/modes/dash.post.php(30): {closure}(Object(PerchAuthenticatedUser)) #1 /.../system/core/dashboard/index.php(20): include('...') #2 {main} thrown in /.../addons/apps/perch_mailchimp/dashboard.php on line 55

The issue was flagged in this post, but is still in the latest version.

This bug is also present in Perch Forms.

Best, Olly