Can not generate service, versioning conflict. What could I broke?

I use feathers for some months now and I already created and used several services. The app is generated with feather/cli command: 'feathers generate app'.

Today I tried to generate a new service with the usual command: feathers generate service only to get the error:

× This version of the generator will only work with Feathers Buzzard (v3) and up. Please runfeathers upgradefirst.

Fine. Run the upgrade. Got new error:

throw new Error('It looks like@feathersjs/feathersis already a dependency. I can not run the upgrade again.'); ^

checked the version: is 3.9.0
Uninstalled/re-installed feathers/cli Nothing works. Not sure what I broke as I did not (remember to) upgrade anything since a couple of days ago when I created the last service. Feathers was not updated in the last 4 months.

I tried googling my error but it seems like nobody else has this problem so it has to be something I've done.

Any suggestions?

LE: I have in package.json dependencies:

    "@feathersjs/errors": "^3.3.6",
    "@feathersjs/express": "^1.3.1",
    "@feathersjs/feathers": "^3.3.1",
    "@feathersjs/socketio": "^3.2.9",
    "feathers-knex": "^5.0.7",
    "feathers-memory": "^3.0.2",
    "feathers-rest": "^1.8.1",
    "feathers": "^2.2.4",```

Solution

This error will be shown if you still have the feathers module in your dependencies in your package.json. If @feathersjs/feathers is already included as well you can just remove the feathers dependency (after making sure it is not used anywhere else in your application which it shouldn't).