https://www.drupal.org/node/686938
Undefined index: admin in _field_ui_bundle_admin_path() [#686938] | Drupal.org
Dec 21, 2011 - Hi, I am getting this message when browsing to /admin/reports/fields: Notice: Undefined index: admin in _field_ui_bundle_admin_path() (line 288 of...
in fieldundefinedindexadmin