Hi! I have problems with my erpnext installation, for example, the filters in the product page does not seams right, is not fully loaded, is not showing the checkbox, and another thing that I notice is there is not a gray backgroud either.
The first error in that screenshot is where you should focus. This looks like a potential issue in the code that renders the dom for that filter feature. As I understand it from my quick search of that specific error, the html code is missing some definitions that help the css to render the checkboxes, radio buttons, and menu dropdowns. Which is why they are not properly displaying. From one of your earlier screen shots, you can see the checkbox is there, it just isnt’ styled correctly. If you upgraded these sites, that could explain it, but I think that’s where your problem lies.
Was the ERPNEXT instance a fresh install of version 13 or upgraded from a previous version?