\Drupal::logger('file')->notice('File %file (%realpath) could not be copied because the destination %destination is invalid. This is often caused by improper use of file_copy() or a missing stream wrapper.',array('%file'=>$source->getFileUri(),'%realpath'=>$realpath,'%destination'=>$destination));
\Drupal::logger('file')->notice('File %file (%realpath) could not be moved because the destination %destination is invalid. This may be caused by improper use of file_move() or a missing stream wrapper.',array('%file'=>$source->getFileUri(),'%realpath'=>$realpath,'%destination'=>$destination));