[SOLVED] 403 Forbidden Error on Field Update

I was trying to update a field today, and I have been getting a 403 Forbidden Error, Access Denied, when trying to save or save and close the field. I then went and checked, and this is happening with fields in general. I tried changing other fields, and I get the same 403 error when trying to save a field. Any idea what might be going on or how to troubleshoot?

Thanks!

Just an update. I contacted our website host (which I thought to do after seeing another post about a 403 error), and they fixed the problem. They had to whitelist a mod_security rule. Not sure what happened and why it was only affecting the field editing in Community Builder, but it is okay now.