ERROR 422 when update data inside modal with axios.put [laravel + vuejs 3] - vue.js

Question

I am using Laravel + VueJS 3 to build a small project,
I use axios.put method for update details for single user in a table row via a modal, but I have problems when I click on submit button of a form inside a modal with axios.put, even I filled all data for all inputs but It still said the errors below, can you guys show me how can I fix this please?
Thanks!
ERROR
My backend:
public function updateUser(Request $req, User $user)
{
$req->validate([
'name' => 'required|string|max:255',
'email' => 'required|email|unique:users,email,' . $user->id,
'password' => 'same:confirmPassword|max:64',
'roles' => 'required',
]);
$input = $req->all();
if (!empty($input['password'])) {
$input['password'] = Hash::make($input['password']);
} else {
$input = Arr::except($input, 'password');
}
$user->update($input);
$user->syncRoles($input['roles']);
return $this->sendResponse($user, 'Updated!');
}
My JS Code:
import axios from "axios";
let API_URL = "http://localhost:8000";
export default {
name: "manageUsers",
components: {},
data() {
return {
users: [],
userInfo: {
id: 0,
name: "",
username: "",
phone: "",
email: "",
password: "",
},
};
},
methods: {
refreshUsers() {
axios.get(`${API_URL}/api/users/allusers`).then((res) => {
this.users = res.data.data;
});
},
getUserInfo(user) {
axios
.get(`${API_URL}/api/users/show/` + user.id)
.then((res) => {
this.userInfo.id = res.data.data.id;
this.userInfo.name = res.data.data.name;
this.userInfo.email = res.data.data.email;
this.userInfo.username = res.data.data.username;
this.userInfo.phone = res.data.data.phone;
})
.catch((error) => {
console.log("ERRRR:: ", error.response.data);
});
},
updateUser() {
axios
.put(`${API_URL}/api/users/update/${this.userInfo.id}`)
.then((res) => {
this.refreshUsers();
alert(res.data);
})
.catch((error) => {
console.log("ERRRR:: ", error.response.data);
});
},
},
mounted() {
this.refreshUsers();
},
};
My VueJS template code:
<template>
<table class="table table-striped" id="datatable">
<tbody>
<tr v-for="(user, id) in users" :key="user.id">
<td>{{ user.id }}</td>
<td>{{ user.name }}</td>
<td>{{ user.email }}</td>
<td>{{ user.username }}</td>
<td class="text-right">
<button
class="btn btn-link btn-warning btn-icon btn-sm"
data-toggle="modal" data-target="#userEditModal"
#click="getUserInfo(user)">
<i class="tim-icons icon-pencil"></i>
</button>
</td>
</tr>
</tbody>
</table>
<!-- EDIT USER MODAL -->
<div class="modal modal-black fade" id="userEditModal" tabindex="-1" role="dialog"
aria-labelledby="userEditModal" aria-hidden="true">
<div class="modal-dialog modal-lg" role="document">
<div class="modal-content">
<div class="modal-header">
<h4 class="modal-title" id="userEditModal">
Edit user <strong class="text-primary">{{ userInfo.username }}</strong>
</h4>
<button type="button" class="close"
data-dismiss="modal" aria-hidden="true">
<i class="tim-icons icon-simple-remove"></i>
</button>
</div>
<form class="form-horizontal">
<div class="modal-body">
<div class="d-flex flex-row">
<label class="col-md-3 col-form-label">Username</label>
<div class="col-md-9">
<div class="form-group">
<input type="text" class="form-control" name="username"
v-model="userInfo.username" />
</div>
</div>
</div>
<div class="d-flex flex-row">
<label class="col-md-3 col-form-label">Name</label>
<div class="col-md-9">
<div class="form-group">
<input type="text" class="form-control" name="name"
v-model="userInfo.name" />
</div>
</div>
</div>
<div class="d-flex flex-row">
<label class="col-md-3 col-form-label">Email</label>
<div class="col-md-9">
<div class="form-group">
<input type="email" name="email" class="form-control"
v-model="userInfo.email" />
</div>
</div>
</div>
<div class="d-flex flex-row">
<label class="col-md-3 col-form-label">Roles</label>
<div class="col-md-9">
<div class="form-group">
<input type="roles" name="roles" class="form-control"
v-model="userInfo.roles" />
</div>
</div>
</div>
</div>
<div class="modal-footer d-flex flex-row">
<button type="button" class="btn btn-secondary" data-dismiss="modal">
Close
</button>
<button type="submit" class="btn btn-primary" data-dismiss="modal"
#click="updateUser()">
Save changes
</button>
</div>
</form>
</div>
</div>
</div>
<!-- END EDIT USER MODAL -->
</template>```

Answer 1

I think you're not passing any parameters to your put call. axios docs
example:
axios.put('https://httpbin.org/put', { hello: 'world' });
When an issue like this arises you can always check your network tab in your browser. to see what data is send to your server.