One of my biggest issues with Flutter development is if you let your project sit for a while and come back to it, you have to spend forever trying to get it to run again. Flutter upgrades, but the configuration in the projects don’t and become incompatible. Getting the configuration upgraded to match proves difficult.
I feel like things are getting better and there are better tools, but it is still a challenge. This article is what I have discovered so far. It’s just a few ideas of things you can check.