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Wed Jan 16 15:55:11 2019
HASH(0x5642ce8be888) is not an answerHash in queue evaluator
HASH(0x5642ce8be888) is not an answerHash in queue post_filter
Can't call method "error_flag" on unblessed reference at /opt/fgcuww/pg/lib/WeBWorK/PG/Translator.pm line 1230
The information below can help locate the source of the problem.
in WeBWorK::PG::Local::new called at line 50 of /opt/fgcuww/webwork2/lib/WeBWorK/PG.pm
in WeBWorK::PG::new called at line 923 of /opt/fgcuww/webwork2/lib/WeBWorK/ContentGenerator/Problem.pm
in WeBWorK::ContentGenerator::Problem::pre_header_initialize called at line 184 of /opt/fgcuww/webwork2/lib/WeBWorK/ContentGenerator.pm
in WeBWorK::ContentGenerator::go called at line 382 of /opt/fgcuww/webwork2/lib/WeBWorK.pm
Note that when I add the problem to a different WeBWorK server (hosted for the JMM minicourse), the problem actually works. So what would be the problem on my server?