Update UserFilter model

app/UserFilter.php

@@ -6,5 +6,10 @@ use Illuminate\Database\Eloquent\Model;
 
 class UserFilter extends Model
 {
-    //
+    protected $fillable = [
+		'user_id',
+		'filterable_id',
+		'filterable_type',
+		'filter_type'
+    ];
 }