I am updating my website (http://www.mammagard.com/) and I am unable to add/edit a Text Block module on any of my Articles with SP Page Builder. I was able to earlier today, but suddenly whenever I try, I lose all content on the page and see a blank screen (screenshot). It is also worth noting that I am working with the J2Store component, and editing product pages as Articles.
I have tried this on both Chrome and Firefox, and using a different device, before and after clearing the cache. The issue is replicated on new articles, also. I tried fixes from online including reinstalling SP Page Builder and J2Store, and swapping between TinyMCE and JCE HTML editors, but to no avail.
I am running Joomla 3.10.6, SP Page Builder Pro Version 3.8.5, and J2Store Version 3.3.20