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numbas / Numbas

A completely browser-based e-assessment/e-learning system, with an emphasis on mathematics
http://www.numbas.org.uk
Apache License 2.0
202 stars 117 forks source link

When a mathematical expression part has no correct answer, an error 'exprTree is null' happens before the nicely-worded "no correct answer" error message #802

Closed christianp closed 2 years ago

ScriptHound commented 3 years ago

Hello, please show how to replicate the bug.

christianp commented 2 years ago

This is no longer the case: I created a part and left the correct answer field empty, and I got "Correct answer is missing".