LB Preview Visualization Set runtime error 1.7.0

Hi there, first time posting.

I’m trying to get a preview in this direct sun path study but the Visualization set component keeps having a runtime error (see photo), I tried to open the example given in the official 1.7.0 LB installer, but it does the same. It says it needs more than two values to unpack. I am unsure what it means as I am new to the tool, can someone kindly help me out here?

(sorry new user can’t upload gh. attachments here…)
the file I want to upload is in the official installer’s sample folder, the file name is visualization_set

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