I'm also facing the same issue, in my case when I was trying to add multiple ...

I'm also facing the same issue, in my case when I was trying to add multiple paragraphs entities the ajax function in the module gets called and validates from the viewreference module, and throws illegal error because on page load the view filter option is set to none, but the display id filter shows all the input. So, changed the default list of filter items that can be shown, attaching a patch that worked in my case.