Error message

• Notice: Undefined offset: 71 in user_node_load() (line 3720 of V:\vHost\esc2.main\drupal7\modules\user\user.module).
• Notice: Trying to get property 'name' of non-object in user_node_load() (line 3720 of V:\vHost\esc2.main\drupal7\modules\user\user.module).
• Notice: Undefined offset: 71 in user_node_load() (line 3721 of V:\vHost\esc2.main\drupal7\modules\user\user.module).
• Notice: Trying to get property 'picture' of non-object in user_node_load() (line 3721 of V:\vHost\esc2.main\drupal7\modules\user\user.module).
• Notice: Undefined offset: 71 in user_node_load() (line 3722 of V:\vHost\esc2.main\drupal7\modules\user\user.module).
• Notice: Trying to get property 'data' of non-object in user_node_load() (line 3722 of V:\vHost\esc2.main\drupal7\modules\user\user.module).