Hello James Huff,
I am having the same problem. I have tried all the suggestions (manually resetting my plugins , rename the directory of your currently active theme, trying to login with http//example.com/wp-login.php instead of with the full URL) on wordpress support concerning this issue but I still cant login to my dashboard.
When I renamed the directory of my currently active theme, I got a blank screen when i visited the website and I still wasn’t able to login.
Please i need your assistance. Thank you