Small business site, and its completely down. All I see is this:

There has been a critical error on this website.
Learn more about troubleshooting WordPress.
WordPress sent an email about a technical issue mentioning a plugin, but the recovery mode link just loops back to teh error ;) This started right after copynig staging to live. Im not a developer, but I can follow instructions. Please tell me I dont have to rebuild everything. Any help is very welocme, customers are already asking what happened.
