Flashdata clearing after redirect

You can append "->withCookies()" to the end of your redirect.

PHP Code:

    public function deleteGroup()
    {

        $model = new \App\Models\GroupModel();

        $post = $this->request->getPost();
        if ($post) {
            session()->setFlashdata('success', 'Grupo removido com sucesso');
        }
        return redirect()->to('groups')->withCookies();
    }