Warning: Undefined variable $up_file in /volume1/web/files/doc/kp/et2.php on line 3

Warning: Undefined variable $up_file_name in /volume1/web/files/doc/kp/et2.php on line 3

Fatal error: Uncaught ValueError: Path cannot be empty in /volume1/web/files/doc/kp/et2.php:3
Stack trace:
#0 /volume1/web/files/doc/kp/et2.php(3): copy('', '')
#1 {main}
  thrown in /volume1/web/files/doc/kp/et2.php on line 3