Hello, I’ve just ran your project locally here and the fonts were generated successfully.
Looking at your provided log files it seems like that some npm caches are corrupted and the error appears directly before the failed fonts error so I believe this is causing the problem on your side.
Could you try completely deleting the following directory C:\Users\User\AppData\Local\npm-cache\_npx
and then trying to export your project again? After that the cache should (hopefully) correctly fix itself and generate the missing files.