by Eu Hua Tan.
Further check seems to lead to line 2019, in this particular file backup\moodle2\restore_stepslib.php that is causing the issue.
public function process_customfield($data) {
$handler = core_course\customfield\course_handler::create();
$newid = $handler->restore_instance_data_from_backup($this->task, $data);
if ($newid) {
//$handler->restore_define_structure($this, $newid, $data['id']);
}
}
public function process_customfield($data) {
$handler = core_course\customfield\course_handler::create();
$newid = $handler->restore_instance_data_from_backup($this->task, $data);
if ($newid) {
//$handler->restore_define_structure($this, $newid, $data['id']);
}
}