Cannot use Flushbar v.1.5.3

[annalaufey]

I am getting the FocusScopeNode error all of a sudden. I see that more people are experiencing this and that there is some major Flutter/Dart update that is causing this.
All of a sudden, out of the blue today, I suddenly could not run my app.
I hadn't updated anything that I know of, not the pubspec.yaml or installed a new version of Flutter.

I've been running flushbar v1.2.1 and I haven't had any trouble.
Now that I got this issue, I see that the flushbar was updated today to v1.6.0, probably around the similar time that my code stopped working.

Here is my Flutter Doctor -v
[✓] Flutter (Channel stable, v1.5.4-hotfix.2, on Mac OS X 10.14.5 18F132, locale en-IS)
• Flutter version 1.5.4-hotfix.2 at /Users/ori.annas/flutter
• Framework revision 7a4c33425d (5 weeks ago), 2019-04-29 11:05:24 -0700
• Engine revision 52c7a1e849
• Dart version 2.3.0 (build 2.3.0-dev.0.5 a1668566e5)

[✓] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
• Android SDK at /Users/ori.annas/Library/Android/sdk
• Android NDK location not configured (optional; useful for native profiling support)
• Platform android-28, build-tools 28.0.3
• Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1343-b01)
• All Android licenses accepted.

[✓] iOS toolchain - develop for iOS devices (Xcode 10.2.1)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Xcode 10.2.1, Build version 10E1001
• ios-deploy 1.9.4
• CocoaPods version 1.6.0.beta.1

[✓] Android Studio (version 3.4)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin version 35.3.1
• Dart plugin version 183.6270
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1343-b01)

[✓] Connected device (2 available)
• Android SDK built for x86 • emulator-5554 • android-x86 • Android 8.1.0 (API 27) (emulator)
• iPhone Xʀ • 473D4A7D-7473-4CAB-87AB-C474EBFAC701 • ios • com.apple.CoreSimulator.SimRuntime.iOS-12-2 (simulator)

• No issues found!

This it the error I'm getting

And here is a part of my pubspec.yaml

I tried using either flushbar v1.2.1 and v.1.5.3, but what ever do, it seems that it still always installs v.1.6.0 and I don't understand why.

Why can't I use v.1.2.1 or v.1.5.3 all of a sudden? And what can I do to be able to keep running my app?

Thank you in advance for the help!

[AndreHaueisen]

Use version 1.6.0
Take a look at the changelog.

[AndreHaueisen]

If you don't want to leave stable, install it like this
flushbar: '1.5.3'

[annalaufey]

If you don't want to leave stable, install it like this
flushbar: '1.5.3'

Thank you Andre! This worked :)

[AndreHaueisen]

No problem :)