When we upload image in it then Undefined message in alert shows and no image display.

When we upload image then Undefined message shows and no image will display in filemanager.
How we can resolve it?
<img width="958" height="603" alt="Image" src="https://github.com/user-attachments/assets/e2337b4b-487e-4f18-9f4f-25a59b98f3fb" />