Support for Drupal 7 is ending on 5 January 2025—it’s time to migrate to Drupal 10! Learn about the many benefits of Drupal 10 and find migration tools in our resource center.
Title says it all. This only happens for the Flat List HS implementation, which virtually nobody uses. I encountered this error while upgrading my custom hsdemo module that's in use at http://wimleers.com/demo/hierarchical-select.
Comments
Comment #1
Wim LeersWorked around this by using a hash of the serialized $config['params'].
http://drupalcode.org/project/hierarchical_select.git/commit/93c3959