I was experiencing the same issue but I found the problem. The plugin is trying to split each value by ; instead of ,
I was able to fix the issue by editing the plugin file hk-filter-and-search/hk-filter-and-search.php on line 200.
Old Value: var line = data[i].split(";");
New Value var line = data[i].split(",");
This isn’t an ideal fix but it’s helpful if you need this immediately. I am hoping the plugin author can add an option to change from ; to , in the future. Hope this helps.
Also, if you don’t want to edit the file, a .csv file with a ; separator should work.
