Warning: Creating default object from empty value in /services/http/users/b/benliu/moodle/config.php on line 50

Error detected in config.php

Error in: $CFG->dirroot = '/mnt/data/u1/services/http/users/b/benliu/moodle';

Try this: $CFG->dirroot = '/services/http/users/b/benliu/moodle';