Warning: require(./assets/s2di.php): Failed to open stream: No such file or directory in /home/.sites/471/site35/web/s2duser.php on line 22

Fatal error: Uncaught Error: Failed opening required './assets/s2di.php' (include_path='.:/usr/lib/php://share/php/php:/usr/share/pear:/usr/share/php') in /home/.sites/471/site35/web/s2duser.php:22
Stack trace:
#0 {main}
  thrown in /home/.sites/471/site35/web/s2duser.php on line 22