indexeddb-api preview doesn't work on hover

[wangzhatt24]

What information was incorrect, unhelpful, or incomplete?

indexeddb-api preview doesn't work on hover

When I successfully uploaded the file, when I hovered over it, I couldn't see the preview information of the photo

I have given the data as follows:

Title: 1
Bibliographic ID: 1
Year: 1
File image: call_of_vahala_img.jpg
Online-file image URL: i dont fill this
(same origin URL)

What did you expect to see?

The photo is displayed in the preview frame

Do you have any supporting links, references, or citations?

https://mdn.github.io/dom-examples/indexeddb-api/index.html

Do you have anything more you want to share?

I have tried many file types like png, jpg, mp4, svg, pdf and the pdf file works.