I updated my installation of EE to 5.2.3 and now my file fields say "...loading" but do not load. Other fields work. I tried a fresh install but the same thing happens. I am wondering if someone might be able to offer me some advice. Thanks.
I had a similar issue a while back. I don't know what your console is saying but if it's returning a 406 error it's probably an issue with Mod_Security preventing your scripts from rendering. Check out the link I posted and see if anything looks familiar. If it does then it's a server side issue and you'll have to whitelist those actions in Mod_Security. If your site is hosted on a web hosting service then you'll have to contact their support team and resolve it that way. Hope this helps!