Tried to listen to a value exposed with provider, from outside of the widget tree. Error happens in onSubmitted() – Flutter

    The following assertion was thrown while calling onSubmitted for TextInputAction.done:
    Tried to listen to a value exposed with provider, from outside of the widget tree.
    This is likely caused by an event handler (like a button's onPressed) that called
    Provider.of without passing `listen: false`. To fix, write:
    Provider.of<Counter>(context, listen: false);
    It is unsupported because may pointlessly rebuild the widget associated to the
    event handler, when the widget tree doesn't care about the value.
    The context used was: Boxes(dependencies: [_InheritedProviderScope<Counter?>], state:
    _BoxesState#274b3)
    'package:provider/src/provider.dart':
    Failed assertion: line 274 pos 7: 'context.owner!.debugBuilding ||
          listen == false ||
          debugIsInInheritedProviderUpdate'

This error occurs after i added a line that inserts some data into a list.

    TextField(
        controller: _textController,
        style: const TextStyle(color: Colors.white),
        decoration: 
            const InputDecoration(
                border: 
                    OutlineInputBorder(
                        borderRadius:
                            BorderRadius.all(Radius.circular(40.0)),
                    ),
                labelText: "Enter here",
            ),
            onSubmitted: (value) {
                setState(() {
                    Provider.of<Counter>(context, listen: false); // add listen: false here
                    _boxStorage += "- ${_textController.text}n";
                    _storage.insert(context.watch<Counter>().count, _boxStorage);
                    _saveSharedPreferences();
                    _textController.clear();
                });
            }
    ),

I already tried adding ‘Provider.of<Counter>(context, listen: false)’ which was the suggested solution in the error message. However, this solution does not work for me and the same error occurs once again after running the code. Could anyone help?