It's hard to tell from this error message. Some value is undefined and the part of the code that puts it in the template is complaining. Unfortunately it gives no clue as to which value is undefined Probably some configuration error. I don’t think it has any direct relation with being on EC2
Features & Development
bug? "Use of uninitialized value $result in print at /opt/webwork/webwork2/lib/WeBWorK/Template.pm line 154."
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