If you report an export problem and it is obvious you did not read the #FAQ posts or search, your post will be hidden

[shotcut]

Nearly all export failures are due to running out of memory, possibly by running the discontinued 32-bit version. Read the FAQ and see

Rendering problems

Maybe you are running out memory: reboot start shotcut and nothing else open the project but do not play it export and wait for it to finish before starting anything else Also, I see you are using the 32-bit version. It is less stable, can only use up to 3GB RAM, and has been discontinued. So, limited memory is the most likely problem. Use 64-bit if you can. Otherwise, reduce tracks if you can. 4 tracks of 1920x1080 is a lot for this 32-bit program.

If you read all of this and tried the suggestions, then please explain how your situation is different.