I'm building this app in MS Teams. I am assuming this is using some built in datasource. When I create a table it looks like this.

One thing I did notice is that the most recent table I created does not reference cr9c7_name when I am entering the OnChange formula.
Set(vendorPartner, VendorPartner_CB_1.Selected.'Vendor Partner')
Other OnChange formulas look more like this
Set(industry,Industry_CB_1.Selected.'Industry (cr9c7_name)')
In this case this is not a valid formula
Set(industry,Industry_CB_1.Selected.'Vendor Partner (cr9c7_name)')
I don't think that is the issue though. if I remove that datacard I still get the error.