[Wed Feb 20 09:03:15.351130 2019] [perl:error] [pid 7860] [client 205.155.53.1:18019] An error occurred while trying to update grades via LTI: Can't call method "getSettingValue" on an undefined value at /opt/webwork/webwork2/lib/WeBWorK/Authen/LTIAdvanced/SubmitGrade.pm line 297.\
We are also running version $WW_VERSION = 'WeBWorK-2.13';
Also, we are using this setting $LTIGradeMode = "homework";