UE freezes when "Build" runs

Hello!
Currently, I’m on lecture #113 and I’ve noticed that since some point I can’t run “Build” or even “Build Lighting Only” in UE. But a couple of lectures ago I’m sure I launched this. The process stops at some point and I just can’t do anything (nor stop or press any other button. everything is non-clickable and there is no reaction from UE). Please see the screenshot below - this is what I see at this moment.

Could anybody help with how to fix this and how to get an opportunity to run the “Build” button again?

It can take a while, especially on lower end hardware.

Have you checked it’s doing something in Windows Task Manager?

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