Internal server error 500 when sending ajax post request in laravel 9 - ajax

Question

I am using laravel 9. I am trying to make a ajax crud operation using alax. It respond well in get request. but when I sending the post request it shows:
http://127.0.0.1:8000/add/teacher 500 (Internal Server Error) in the console. I used meta in the head and ajax csrf header according to documentation. Still showing error. here my ajax code example bellow:
<script>
$.ajaxSetup({
headers: {
'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content')
}
});
$(document).ready(function() {
$(".add_teacher").on('click', function(event) {
event.preventDefault();
var name = $("#name").val();
var email = $("#email").val();
var position = $("#position").val();
var phone = $("#phone").val();
var password = $("#password").val();
$.ajax({
method: "post",
url: "{{route('store')}}",
data: {
name: name,
email: email,
position: position,
phone: phone,
password: password
},
success: function(res) {
if (res.status == 'success') {
$("#exampleModal").modal('hide');
$("#modalform")[0].reset();
$(".table").load(location.href + ' .table');
}
},
error: function(err) {
let error = err.responseJSON;
$.each(error.errors, function(index, value) {
$(".errorMessage").append('<span class="text-
danger">' + value +'</span><br>');
});
}
});
});
});
</script>
Here is my route:
Route::post('/add/teacher', [TeacherController::class,'store'])->name('store');
and my controller code is:
public function store(Request $request)
{
$request->validate(
[
"name" => "required",
"email" => "requied|unique:teachers",
"position" => "requied",
"phone" => "requied|unique:tachers",
"password" => "requied",
],
[
"name.required" => "Name is required",
"email.required" => "Email is required",
"email.unique" => "Email already exists",
"position.required" => "Postion is required",
"phone.required" => "Phone is required",
"phone.unique" => "Phone already exixts",
"password.required" => "password is required",
]
);
$teacher = new Teacher();
$teacher->name = $request->name;
$teacher->email = $request->email;
$teacher->position = $request->position;
$teacher->phone = $request->phone;
$teacher->password = $request->password;
$teacher->save();
return response()->json([
'status' => 'success',
]);
}
Now I need an exact solution to go farther. Thank you.