I created a rule 3-4 months ago that worked great - automatically updating the same (custom) "Download Date" field type when that field was updated in a (renamed Datafile) Bug or Story type issue for all task type issues linked as "relates to" to the Datafile.
Last week the rule started failing and the only notes are below which is not accurate:

I have checked that the issue types all do contain this field type and tried turning rule on and off, copying it, and also asking Atlassian AI to write a similar rule (came up with the same old rule) here it is: (redacted)
Any thoughts or help appreciated!