When I use ais-toggle-refinement, I get 0 results

                  <ais-toggle-refinement
                                attribute="is_air"
                                label="Air Conditioner"
                  />
https://real.test/search?toggle%5Bis_air%5D=true

I am getting this warning can this be the issue?

How I am suppose to make checkbox work?

Here is my algolia indices
gnome-shell-screenshot-SXMRK0

Ok I fixed and getting results, the issue was that I had to go to in Algolia menu at
indices->Configuration->FILTERING AND FACETING->Facets->Attributes for faceting
-> Add Attribute then set it as filter only.Would prefer the docs were more clear about this.

but now the label says 0 instead of the actual quantity.
gnome-shell-screenshot-XVR5K0
How can I show proper value?