Crash at `shimmer-loading cookbook` full sample code

[AbdeMohlbi]

Page URL

https://docs.flutter.dev/cookbook/effects/shimmer-loading

Page source

https://github.com/flutter/website/blob/main/sites/docs/src/content/cookbook/effects/shimmer-loading.md

Describe the problem

The full code sample in https://docs.flutter.dev/cookbook/effects/shimmer-loading#interactive-example is crashing when trying to display the real images from network because the image url is incorrect:

Expected fix

The full code sample should work as expected

Additional context

No response

I would like to fix this problem.

• I will try and fix this problem on docs.flutter.dev.

[AbdeMohlbi]

the crash for reference:

══╡ EXCEPTION CAUGHT BY IMAGE RESOURCE SERVICE ╞═════════════════
The following NetworkImageLoadException was thrown resolving an
image stream completer:
HTTP request failed, statusCode: 404,
https://docs.flutter.dev/assets/images/exercise/split-check/Avatar1.jpg

When the exception was thrown, this was the stack

Image provider:
  NetworkImage("https://docs.flutter.dev/assets/images/exercise/split-check/Avatar1.jpg",
  scale: 1.0, webHtmlElementStrategy: never, headers: null)
Image key:
  NetworkImage("https://docs.flutter.dev/assets/images/exercise/split-check/Avatar1.jpg",
  scale: 1.0, webHtmlElementStrategy: never, headers: null)
═════════════════════════════════════════════════════════════════

══╡ EXCEPTION CAUGHT BY IMAGE RESOURCE SERVICE ╞═════════════════
The following NetworkImageLoadException was thrown resolving an
image stream completer:
HTTP request failed, statusCode: 404,
https://docs.flutter.dev/assets/images/exercise/split-check/Food1.jpg

When the exception was thrown, this was the stack

Image provider:
  NetworkImage("https://docs.flutter.dev/assets/images/exercise/split-check/Food1.jpg",
  scale: 1.0, webHtmlElementStrategy: never, headers: null)
Image key:
  NetworkImage("https://docs.flutter.dev/assets/images/exercise/split-check/Food1.jpg",
  scale: 1.0, webHtmlElementStrategy: never, headers: null)
═════════════════════════════════════════════════════════════════

══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞════════════════════════
The following _TypeError was thrown building
ShimmerLoading(dirty, state: _ShimmerLoadingState#97995):
TypeError: null: type 'Null' is not a subtype of type 'RenderBox'

Widget creation tracking is currently disabled. Enabling it
enables improved error messages. It can be enabled by passing
`--track-widget-creation` to `flutter run` or `flutter test`.

When the exception was thrown, this was the stack

═════════════════════════════════════════════════════════════════

══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞════════════════════════
The following _TypeError was thrown building
ShimmerLoading(dirty, state: _ShimmerLoadingState#06059):
TypeError: null: type 'Null' is not a subtype of type 'RenderBox'

Widget creation tracking is currently disabled. Enabling it
enables improved error messages. It can be enabled by passing
`--track-widget-creation` to `flutter run` or `flutter test`.

When the exception was thrown, this was the stack

═════════════════════════════════════════════════════════════════

══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞════════════════════════
The following _TypeError was thrown building
ShimmerLoading(dirty, state: _ShimmerLoadingState#57f6b):
TypeError: null: type 'Null' is not a subtype of type 'RenderBox'

Widget creation tracking is currently disabled. Enabling it
enables improved error messages. It can be enabled by passing
`--track-widget-creation` to `flutter run` or `flutter test`.

When the exception was thrown, this was the stack

═════════════════════════════════════════════════════════════════

[AbdeMohlbi]

i wonder if there are other unexisting referenced assets