Multiple TOptional errors while building

You don’t, not really. If you disable Live Coding in the Editor settings you will stealth enable Hot Reload which is a prior attempt by Epic that is much, much worse and likely to corrupt your assets.

You can easily prevent triggering of Live Coding by shutting down the Editor, building from your IDE and relaunching. If you get errors while Live Coding (there are some cases where it works well), you can shut down the Editor and do a non-Live Coded build.