I've added use WeBWorK::Authen::LTIAdvanced::SubmitGrade into lib/WeBWorK/Authen/LTIAdvanced.pm and it worked.
I am not sure if this was correct way of doing it.
I've added use WeBWorK::Authen::LTIAdvanced::SubmitGrade into lib/WeBWorK/Authen/LTIAdvanced.pm and it worked.
I am not sure if this was correct way of doing it.