firebase_storage/channel-error Unable to establish connection on channel

I’m trying to connect Firebase Storage to my flutter project. But I got an error

[ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled
Exception: [firebase_storage/channel-error] Unable to establish
connection on channel.

I’ve found that it could be problem with rules because I’ve used firebase auth. But my rules in the storage looks like this:

rules_version = '2';
    service firebase.storage {
    match /b/{bucket}/o {
    match /{allPaths=**} {
      allow read, write : if request.auth !=null;
    }
  }
}

I’ve also tried :

allow read, write : if true

but it has the same problem

I’ve changed my build.gradle by adding dependencies

implementation("com.google.firebase:firebase-storage:21.0.0")

My Code:

Reference get firebaseStorage => FirebaseStorage.instance.ref();

    class FirebaseStorageService extends GetxService{
    
    static Future<String?> getImage(String? imgName) async{

    if(imgName == null){
      return null;
    }
    try{
     var urlRef = firebaseStorage
          .child("images")
          .child('$imgName.png');

     var imgUrl = await urlRef.getDownloadURL(); //here is a problem

     return imgUrl;
    }catch (e){
      throw e;
      return null;
    }
  }
}