Runtime error while cancelling / not selecting any files after clicking the "open" in concore editor

After clicking the "open" button if we don't select any files,
<img width="1854" height="743" alt="Image" src="https://github.com/user-attachments/assets/d8b7c55e-4907-451c-810a-2f7f001fed79" />

we get a runtime error
<img width="1884" height="908" alt="Image" src="https://github.com/user-attachments/assets/dfd84c85-76bd-45fe-a030-4a23bf6352dc" />