``` TypeError: Cannot read properties of null (reading 'C') at Ccf (https://docs.google.com/static/document/client/js/157553674-...) at Bcf (https://docs.google.com/static/document/client/js/157553674-...) ```Has something to do with grammar. The document does not fail when `Show grammar suggestion` is turned off. Also, Therefore, And, Anyway, But, Who, Why, Besides, However. Each in caps 5 times