Error message

• Notice: Undefined offset: 52 in user_node_load() (line 3694 of /homepages/1/d750366610/htdocs/modules/user/user.module).
• Notice: Trying to get property of non-object in user_node_load() (line 3694 of /homepages/1/d750366610/htdocs/modules/user/user.module).
• Notice: Undefined offset: 52 in user_node_load() (line 3695 of /homepages/1/d750366610/htdocs/modules/user/user.module).
• Notice: Trying to get property of non-object in user_node_load() (line 3695 of /homepages/1/d750366610/htdocs/modules/user/user.module).
• Notice: Undefined offset: 52 in user_node_load() (line 3696 of /homepages/1/d750366610/htdocs/modules/user/user.module).
• Notice: Trying to get property of non-object in user_node_load() (line 3696 of /homepages/1/d750366610/htdocs/modules/user/user.module).