图片源无法从 URL 加载，知道为什么会这样吗？

Question

I'm using Google Books API to make it an application program using flutter on android studio, but the displayed image can't be loaded on the URL with the following description coming out;

Running with unsound null safety For more information see https://dart.dev/null-safety/unsound-null-safety Debug service listening on ws://127.0.0.1:53771/9sOn-nopEoY=/ws XMLHttpRequest error.

The following ImageCodecException was thrown resolving an image codec:
Failed to load network image.
Image URL: http://books.google.com/books/content?id=WiEpzgEACAAJ&printsec=frontcover&img=1&zoom=1&source=gbs_api
Trying to load an image from another domain? Find answers at:
https://flutter.dev/docs/development/platform-integration/web-images

When the exception was thrown, this was the stack: 
Image provider: NetworkImage("http://books.google.com/books/content?id=WiEpzgEACAAJ&printsec=frontcover&img=1&zoom=1&source=gbs_api", scale: 1)
Image key: NetworkImage("http://books.google.com/books/content?id=WiEpzEACAAJ&printsec=frontcover&img=1&zoom=1&source=gbs_api", scale: 1)
====================================================================================================```

[display of errors that occur in screenshots][1]

[display of errors that occur in screenshots][2]

  [1]: https://i.stack.imgur.com/189rY.png
  [2]: https://i.stack.imgur.com/ujA7s.png

does anyone know where the error from the program?

Answer 1

when I check the URL on my browser, it says no image available. that might be the cause.

Answer 2

Image cannot be loaded from other domains like error says. Like the link from the error suggests HtmlElementView can be used to overcome this.