Could anyone help me with this following error when I try to submit answers for the homework set problems.
I recently upgraded from Version 2.10 to version 2.12 master for LTI integration with Canvas. Canvas Login link and account creation is working but I am having error with this submitting answers.
WeBWorK error
An error occured while processing your request. For help, please send mail to this site's webmaster (webmaster@localhost), including all of the following information as well as what what you were doing when the error occured.
Wed Jun 07 17:27:35 2017
Warning messages
Error messages
Can't locate object method "response_obj" via package "PGanswergroup" at /opt/webwork/webwork2/lib/WeBWorK/ContentGenerator/ProblemUtil/ProblemUtil.pm line 145.
Call stack
The information below can help locate the source of the problem.
in WeBWorK::ContentGenerator::ProblemUtil::ProblemUtil::process_and_log_answer called at line 765 of /opt/webwork/webwork2/lib/WeBWorK/ContentGenerator/Problem.pm
in WeBWorK::ContentGenerator::Problem::pre_header_initialize called at line 214 of /opt/webwork/webwork2/lib/WeBWorK/ContentGenerator.pm
in WeBWorK::ContentGenerator::go called at line 382 of /opt/webwork/webwork2/lib/WeBWorK.pm