As soon as i add this package i get the following error

[UsmanSheikhUAE]

this is right after when i add readsms package. Can you help?

The supplied phased action failed with an exception.

A problem occurred configuring project ':readsms'.
Could not create an instance of type com.android.build.api.variant.impl.LibraryVariantBuilderImpl.
Namespace not specified. Specify a namespace in the module's build file. See https://d.android.com/r/tools/upgrade-assistant/set-namespace for information about setting the namespace.
If you've specified the package attribute in the source AndroidManifest.xml, you can use the AGP Upgrade Assistant to migrate to the namespace value in the build file. Refer to https://d.android.com/r/tools/upgrade-assistant/agp-upgrade-assistant for general information about using the AGP Upgrade Assistant.

[Ayush783]

Let me see, Maybe some issue with AGP version.

[Ayush783]

Can you also post the output of flutter doctor