Annotate PDF Advanced plugin produces error when creating an assignment

[nsgreen749]

Hi. I'm getting an error message on assignments when the Annotate PDF Advanced plugin is enabled.
It throws an "exception - argument 1 passed to assign::calculate_properties() must be an instance of stdclass, null given, called in [dirroot]/mod/assign/locallib.php on line 1705" error.
I'm using Moodle 3.10 (Build 20201211).
I need this particular plugin to work, so disabling it doesn't solve my problem.

[ndunand]

Tanks @nsgreen749 for chiming in on this and confirming this is still an issue. This is actually a duplicate of #19 .

I'm closing this and will follow in #19 .