Error message

• Notice: Undefined index: entity keys in DrupalDefaultEntityController->__construct() (line 67 of /kunden/114882_01594/webseiten/10/APPs/CMSs/Drupal7/includes/entity.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /kunden/114882_01594/webseiten/10/APPs/CMSs/Drupal7/includes/common.inc:2426) in drupal_send_headers() (line 1007 of /kunden/114882_01594/webseiten/10/APPs/CMSs/Drupal7/includes/bootstrap.inc).
• PDOException: SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'IN ('2'))' at line 1: SELECT base.nid AS nid, base.vid AS vid, base.type AS type, base.language AS language, base.title AS title, base.uid AS uid, base.status AS status, base.created AS created, base.changed AS changed, base.comment AS comment, base.promote AS promote, base.sticky AS sticky, base.tnid AS tnid, base.translate AS translate FROM {node} base WHERE (base. IN (:db_condition_placeholder_0)) ; Array ( [:db_condition_placeholder_0] => 2 ) in DrupalDefaultEntityController->load() (line 122 of /kunden/114882_01594/webseiten/10/APPs/CMSs/Drupal7/includes/entity.inc).