Laravel : Creating default object from empty value - laravel

Question

I have this following problem while trying to Edit data already existing in my database.
my controller name is UserController.php
Error: Creating default object from empty value.
I can Pull data from my database and post it in my form. when trying editing that error occurs.
Here is the block of code that causes the error.
public function update(Request $request, $id)
{
$this->validate($request, [
'fname' => 'required',
'lname' => 'required',
'email' => 'required',
'phone' => 'required',
'address' => 'required',
'country' => 'required',
'city' => 'required',
'bday' => 'required',
'username' => 'required',
'password' => 'required',
'access' => 'required'
]);
$userList = users::find($id);
$userList->fname = $request->get('fname');
$userList->lname = $request->get('lname');
$userList->email = $request->get('email');
$userList->phone = $request->get('phone');
$userList->address = $request->get('address');
$userList->country = $request->get('country');
$userList->city = $request->get('city');
$userList->bday = $request->get('bday');
$userList->username = $request->get('username');
$userList->password = $request->get('password');
$userList->access = $request->get('access');
$userList->save();
return redirect()->route('users.index')->with('success', 'Data Updated');
}
I can see from the debugger that I send the new data
GET Data empty
POST Data
_token "mnC6GliLHdSazZkEpaxZQ97aAChr2LObcc9clMlk"
_method "PATCH"
fname "test"
lname "user"
email "test#user.lara"
phone "12345678990"
address "Streat"
country "countryplace"
city "somecity"
bday "2018-01-01"
username "tester"
password "test"
access "Client"
But It highlights $userList->fname = $request->get('fname');
and says : "Creating default object from empty value"
I am new to laravel and cant understand why this is happening.
is it because of my form?
<form method="post" action="{{action('UserController#update','$id')}}">
{{csrf_field()}}
<input type="hidden" name="_method" value="PATCH" />

Answer 1

I think the problem is here:
<form method="post" action="{{action('UserController#update','$id')}}">
You should not use quotes for $id, it should be:
<form method="post" action="{{action('UserController#update',$id)}}">
Now because you have quotes, in line:
$userList = users::find($id);
no user is found, because in fact it's doing:
$userList = users::find('$id');