How to fix "This requires the spread-collection experiment to be enable " on latest upgrade of flutter?

Question

Hello I have a code like this
SizedBox(height: 10),
        ..._function(context, model),
        SizedBox(height: 5),
        if (model.bloc)
)

But after flutter upgrade I have error focus on "..."
This requires the spread-collection experiment to be enable

How can I rewrite this correctly ? Thank you

Jagraj Singh · Answer

In pubspec.yaml
change environment sdk constraints to:
  sdk: ">=2.7.0 <3.0.0"

Invalidate Caches and Restart your IDE
Android Studio: File>> Invalidate Caches and Restart.
That would be enough.

P4yam · Answer

What happens when you change your environment to this:
environment:
  sdk: ">=2.6.0 <3.0.0"

and also do a Flutter clean and restart the IDE
Edited:
In the root of your project create a file named analysis_options.yaml and add these lines to it:
analyzer:
  enable-experiment:
    - spread-collections

How to fix "This requires the spread-collection experiment to be enable " on latest upgrade of flutter?

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