Here is the warning in my logs:

Emplacement http://toto.com/node/add/region?render=overlay&render=overlay
Référent http://toto.com/node/add/region?render=overlay
Message Warning : explode() expects parameter 2 to be string, array given dans menu_node_submit() (ligne 723 dans /var/www/toto.com/modules/menu/menu.module).
Importance warning

Comments

hrrsn’s picture

hrrsn commented
Assigned: Unassigned » hrrsn
Issue tags: +tcdrupal2012
hrrsn’s picture

hrrsn commented
Issue tags: +Needs steps to reproduce
hrrsn’s picture

hrrsn commented
Assigned: hrrsn » Unassigned
Status: Active » Postponed (maintainer needs more info)

I was not able to reproduce this locally, and need some more information about how to reproduce this problem.

Here is what I tried:
1. Install the latest Drupal 8.x-dev using the standard profile.
2. go to /node/add/region?render=overlay - this did not produce an error
3. go to /modules/menu#overlay=admin/structure/menu - this did not produce an error

neRok’s picture

neRok commented
Project: Drupal core » Hierarchical Select
Version: 7.12 » 7.x-3.x-dev
Component: menu.module » Code
Status: Postponed (maintainer needs more info) » Closed (duplicate)

Google search reveals this is likely a problem with Hierarchical Select module.
And is a duplicate of #1304002: [explode() expects parameter 2 to be string, array given in menu_node_submit()] warning msg