@MusikAnimal maybe add namespace 102 (T271612 , WikiProject namespace) to /x-tools/xtools/src/Model/PageAssessments.php#Line17 to resolve this problem?
(Note that WikiProject namespace in jawiki( T26852 ), kowiki( T29651 ), eswiki( T5736 ), eowiki( T22527 ), ckbwiki( T54665 ), pl.wiki( T10077 ), their NSID are all 102)

Yeah that's the quick fix, but then it'd scan that namespace for all wikis (not really a problem, just redundant is all).

There are other namespaces we aren't including either when we could. I think what we should do is just always JOIN on the assessment data, and only show the column (or "Assessments" section, etc.) if there are results. That makes this more future-proof and agnostic to a project and its namespace configuration.

I think what we should do is [...]

@MusikAnimal Excuse me, could you please let me know if the work item you just proposed is something that can be addressed in the short term? The community is waiting for a solution, as this issue was raised in this thread. If it’s not possible, please let me know so I can report back to the community with specifics.

Let's do the quick fix, then. I'll try to get to it tonight.