Error message

• User warning: The following module is missing from the file system: file_entity. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1187 of /home/iwpnews/public_html/includes/bootstrap.inc).
• Notice: Undefined index: nid in backgroundform() (line 414 of /home/iwpnews/public_html/sites/all/modules/bwm/bwm.module).
• Notice: Trying to get property 'title' of non-object in backgroundform() (line 422 of /home/iwpnews/public_html/sites/all/modules/bwm/bwm.module).
• Notice: Trying to get property 'created' of non-object in backgroundform() (line 422 of /home/iwpnews/public_html/sites/all/modules/bwm/bwm.module).
• Notice: Trying to get property 'field_document' of non-object in backgroundform() (line 423 of /home/iwpnews/public_html/sites/all/modules/bwm/bwm.module).
• Notice: Trying to access array offset on value of type null in backgroundform() (line 423 of /home/iwpnews/public_html/sites/all/modules/bwm/bwm.module).
• Warning: Invalid argument supplied for foreach() in backgroundform() (line 423 of /home/iwpnews/public_html/sites/all/modules/bwm/bwm.module).