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+--- Thread: Cannot run with sound null safety because dependencies don't support null safety (/Thread-Cannot-run-with-sound-null-safety-because-dependencies-don-39-t-support-null-safety)
Cannot run with sound null safety because dependencies don't support null safety - monitive245454 - 07-21-2023
I have followed ["Enabling null safety" on `dart.dev`][1] and also [**migrated**][2] my whole Flutter application to null safety.
Now, I am trying to run it using `flutter run`. However, it will not start because of the following error:
```lang-none
Error: Cannot run with sound null safety, because the following dependencies
don't support null safety:
- package:cloud_firestore_web
- package:firebase_core_web
- package:shared_preferences
- package:url_launcher_web
- package:firebase_auth
- package:http
- package:provider
...
For solutions, see
[To see links please register here]
Failed to compile application.```
The guide at the URL says that I should ["wait for dependencies to migrate before you migrate your package"][3], but I want to use [non-nullable by default][4] (NNBD) now.
How can I do that?
[1]:
[To see links please register here]
[2]:[To see links please register here]
[3]:[To see links please register here]
[4]:[To see links please register here]