So how do we get our certificates?

I've completed 98% but I'm not seeing any links to download it and the If you're having trouble finding this, check out this page which explains in more detail page is just information for course creators on how to create certificates for their courses.

I am using the completed project from this repository.

I am getting error on Text() widget and in follow calls.

storyBrain.getStory(),
storyBrain.getChoice1(),
storyBrain.getChoice2(),

A non-null String must be provided to a Text widget.
'package:flutter/src/widgets/text.dart':
Failed assertion: line 285 pos 10: 'data != null'

Screenshot

WorkAround
I tried converting it to string using .toString() but still getting same error.

Flutter Doctor
E:\Temp\flutter\destini-challenge-starting>flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, v1.12.13+hotfix.9, on Microsoft Windows [Version 10.0.18363.778], locale en-IN)

[√] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
[√] Android Studio (version 3.6)
[√] VS Code, 64-bit edition (version 1.44.2)
[√] Connected device (1 available)

• No issues found!

in TODO Step 14 it has to be

//TODO: Step 14 - Use the storyBrain to get the text for choice 2.

Not

//TODO: Step 14 - Use the storyBrain to get the text for choice 1.

I am testing the project on iPhone 11 simulator. However, the icon is not properly displayed on the screen. This works well on Android however.

Guys, Shoudn't it include @required in the constructor of the Story class like:

Story(
{@required this.storyTitle,
@required this.choice1,
@required this.choice2});

Otherwise, it will become optional named parameters instead of required?