Thank you, esmi!
Forgive my ignorance, as this is VERY new to me. I am learning WordPress and built my site, but trouble-shooting is not my strong point.
I did deactivate all plugins and still had the same error. I also reset the plugins folder with the same result as well. I have tried to switch my theme, however my browser gets “stuck” in a loading state.
By re-uploading the wp-admin and wp-includes folders, I assume my content will not be lost, correct?
(Again, sorry, I am very much a newbie. ??