I'm using Sitecore 9.1
and SXA 1.8
, I'm using search facet for sorting, I want to sort by three fields, I wrote the names of the fields lower case and comma-separated at the Facet Field Name as described but the Search request returns 0 results.
I tried writing them between brackets like this (gisearchsortpriority_tl,journey_heading_tl) but still no use