Ubuntu

Error message

• Notice: Undefined offset: 1084 in user_node_load() (line 3694 of /usr/share/drupal7/modules/user/user.module).
• Notice: Trying to get property 'name' of non-object in user_node_load() (line 3694 of /usr/share/drupal7/modules/user/user.module).
• Notice: Undefined offset: 1084 in user_node_load() (line 3695 of /usr/share/drupal7/modules/user/user.module).
• Notice: Trying to get property 'picture' of non-object in user_node_load() (line 3695 of /usr/share/drupal7/modules/user/user.module).
• Notice: Undefined offset: 1084 in user_node_load() (line 3696 of /usr/share/drupal7/modules/user/user.module).
• Notice: Trying to get property 'data' of non-object in user_node_load() (line 3696 of /usr/share/drupal7/modules/user/user.module).