【Laravel】新規投稿ができない

SQLSTATE[HY000]: General error: 1364 Field 'user_id' doesn't have a default value (Connection: mysql, SQL: insert into `notes` (`name`, `description`, `cord_txt`, `url_txt`, `public_status`, `updated_at`, `created_at`) values (たいとる, せつめいらん, こーど, https://www.s.com, 1, 2023-04-21 09:31:28, 2023-04-21 09:31:28))

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
class Note extends Model
{
    use HasFactory;
    public $fillable = [
        'name', 
        'description', 
        'cord_txt', 
        'url_txt', 
        'public_status'
    ]; 
    
    public function note_tags(): HasMany
    {
        return $this->hasMany(NoteTag::class);
    }
    public function user(): BelongsTo
    {
        return $this->belongsTo(User::class);
    }
}

  public function store(Request $request)
  {
      $note = new Note;
      $note->name = $request->name;
      $note->description = $request->description;
      $note->cord_txt = $request->cord_txt;
      $note->url_txt = $request->url_txt;
      $note->public_status   = $request->public_status;
      $note->save();
      return redirect('notes/'.$id);
    }