private function adjustDatabaseTables(): ?RedirectResponse
    {
        $this->container->get('contao.install_tool')->handleRunOnce();

        $installer = $this->container->get('contao.installer');

        $this->context['sql_form'] = $installer->getCommands();

        $request = $this->container->get('request_stack')->getCurrentRequest();

        if (null === $request) {
            throw new \RuntimeException('The request stack did not contain a request');
        }

        if ('tl_database_update' !== $request->request->get('FORM_SUBMIT')) {
            return null;
        }

        $sql = $request->request->get('sql');

        if (!empty($sql) && \is_array($sql)) {
            foreach ($sql as $hash) {
                $installer->execCommand($hash);
            }
        }

        return $this->getRedirectResponse();
    }