Error establishing a database connection problem

I’ve been using Local by Flywheel for a couple of months and it has been working smoothly for me up until now. I opened a website I’m working on for a client and the browser displayed an error message saying “Error establishing a database connection”. I’ve tried contacting support but they weren’t any help at all. I’ve also read some of the articles on here but aren’t any good either. Please help, I was so close to finishing up this project for my client and now this happens. I don’t wanna lose my work. Here is the local-by-flywheel.log file

local-by-flywheel.log (186.7 KB)

Or if someone knows how to transfer my work to another hosting service that would be great too. I just don’t wanna lose my work.