I have created a page for registered users to see their current subscription level and/or renew/upgrade their membership level using the admin interface for Membership plugin. (Membership->Options->Membership Pages->Subscriptions page)
When I go to view the created page I get the following error:
Fatal error: Can't use method return value in write context in .../membership/classes/Membership/Render/Page/Subscription/Renew.php on line 113
@Eugene Manuilov Do you have any ideas?