intl version mismatch

Trying to install it, I receive this error message:

Running "flutter pub get" in myApp...
Because every version of flutter_localizations from sdk depends on intl 0.17.0-nullsafety.2 and every version of awesome_notifications depends on intl ^0.16.1, flutter_localizations from sdk is incompatible with awesome_notifications. 

So, because myApp depends on both awesome_notifications ^0.0.5+2 and flutter_localizations any from sdk, version solving failed.
pub get failed

Looks like a version mismatch. A dependency update should do it.

flutter version:
Flutter (Channel master, 1.24.0-8.0.pre.374, on Microsoft Windows [Version 10.0.18363.1198], locale de-DE)

A temporary fix might be putting:

dependency_overrides:
  intl: ^0.16.1

in the pubspec.yaml

Seems to work for now, but on the long run updating the package might be better.

No, update the intl version inside awesome _notification. Always use the most updated plugin version.

Change it here:

awesome_notifications/pubspec.yaml

Line 16 in b3e4da9

intl: ^0.16.1

I gonna update it in next release. Thanks for advice.

Sorry, but your intl version 0.17.0-null safety.2 does not seem to be a master version, so it was not able to update it in next release.
But you can change it to your local files, without any problems.