Response::setContent(): Argument #1 ($content) must be of type

Hello everyone,
I am trying to use with('owner') to get the owner of the record in the DB but I am getting this error “Response::setContent(): Argument #1 ($content) must be of type”

Symfony\Component\HttpFoundation\Response::setContent(): Argument #1 ($content) must be of type ?string, Illuminate\Database\Eloquent\Builder given, called in /Users/Joseph/Desktop/Github/project/vendor/laravel/framework/src/Illuminate/Http/Response.php on line 72

The model code is 

<?php

namespace App;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class submit_records extends Model{
 use HasFactory;
 protected $fillable = ['id', 'users', 'type', 'notes'];
 public function owner(){
 return $this->hasOne('App\users', 'id', 'users');
 }
}

& the function of the controller is 

 public function earnings_manage_discussion($id){
 $data = submit_records::find($id)->with('owner');
 return $data;
 }

Any help! please!