Click event dont work inside user v-for loop

I have this:

<v-flex style="padding:4px;" v-bind="{ [`xs6`]: true }" v-for="user in theusers" :key="user._id" xs6 sm3 md3 order-md1 order-sm3>

 <button @click="addperson(user)"><v-icon>add</v-icon></button>


 export default {

      meteor: {
            theusers() {
                return Meteor.users.find();

methods: {

             addperson(user) {


cant get a adduser message. It works when I take the button outside the v-for loop

dont know why but this works:

                                <v-btn @click="addperson(user)" icon >