add fillable

app/Models/Channel.php

@@ -8,6 +8,7 @@ use Illuminate\Database\Eloquent\Model;
 class Channel extends Model
 {
     use HasFactory;
+    protected $fillable = ['name','summary','type','lang','status','updated_at','created_at'];
 
     protected $primaryKey = 'uid';
     protected $casts = [