Subscription doesn't work

[feremabraz]

Trying to make an account gives this error after clicking the "confirm" link in email:

{"status":500,"message":"No Node for the model People with value undefined for id found. (3039): {\"response\":{\"errors\":[{\"message\":\"No Node for the model People with value undefined for id found. (3039)\",\"locations\":[],\"path\":[\"updatePeople\"]}],\"data\":{\"updatePeople\":null},\"status\":200},\"request\":{\"query\":\"\\nmutation ConfirmSubscription($id:ID) {\\n    updatePeople(where:{\\n      id: $id\\n    }, data:{\\n      confirmed:true\\n    }) {\\n      id\\n      confirmed\\n      email\\n    }\\n  }\\n\",\"variables\":{\"id\":\"undefined\"}}}"}