error pada project di ubuntu

Warning: mkdir(): Permission denied in /var/www/html/adm/html/service/index.php on line 17

Warning: mkdir(): No such file or directory in /var/www/html/adm/html/service/index.php on line 18

Warning: mkdir(): No such file or directory in /var/www/html/adm/html/service/index.php on line 19

Warning: move_uploaded_file(gambar/2017/02/19/945Screenshot from 2017-01-24 01:07:54.png): failed to open stream: No such file or directory in /var/www/html/adm/html/service/index.php on line 29

Warning: move_uploaded_file(): Unable to move '/tmp/phpkjRLkE' to 'gambar/2017/02/19/945Screenshot from 2017-01-24 01:07:54.png' in /var/www/html/adm/html/service/index.php on line 29

bagaimana cara mengatasi ini ya? terima kasih