Undefined method 'isEditor' in backups controller

I am using a controller to run backups for customers. I defined several roles in app/Traits/Models/UserHelper.php to decide who can do what. In the controller I have

<?php

namespace App\Http\Controllers\Dashboard;

use App\Http\Controllers\Controller;
use App\Models\Editor\Project;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use App\Traits\Models\UserHelper;

/**
 * Client Backup Resource Controller
 * https://laravel.com/docs/9.x/controllers#resource-controllers
 * 
 */
class BackupsController extends Controller
{
    // load the dashboard backups overview for clients
    public function index()
    {
        if (Auth::user()->isEditor()) {
            $projects = Auth::user()->editorProjects;
        } else {
            $projects = Auth::user()->company->projects()
                            ->whereNull('project_id')
                            ->get();
        }

        $selectProject = Project::find(request()->id) ?: $projects->first();

        return view('dashboard.backups.index', [
            'projects' => $projects,
            'selectProject' => $selectProject,
        ]);
    }

    /**
     * Backup client projects
     * POST, /store action, route backups.store
     */
    public function store()
    {
        $project = Auth::user()->company->projects()->findOrFail(request()->project_id);
        $backup = $project->backups()->find(request()->backup);

        if (! $backup) {
            return redirect()->back()
                ->with('exception', 'Please select a backup');
        }

        (new \App\Services\ProjectBackupService($project))->restore($backup);

        return redirect()->back()
                    ->with('saved-success', 'Project has been backed up successfully');
    }
}

I am getting Undefined method 'isEditor'.intelephense(1013) for the editor check. The method isEditor() is in app/Traits/Models/UserHelper.php and I added use App\Traits\Models\UserHelper; to the controller, but it is not being used for some reason.

I tried doing a check for just isEditor instead of if (Auth::user()->isEditor()) { but that still gives me another error

Undefined function 'App\Http\Controllers\Dashboard\isEditor'.intelephense(1010)

in Visual Studio code.

What and I missing here?