fix: correct no tokens redirect

www/setupMFA.php

@@ -10,7 +10,11 @@ use SimpleSAML\XHTML\Template;
 $config = Configuration::getInstance();
 $t = new Template($config, SwitchAuth::SETUP_MFA_TPL_URL);
 
-$state = State::loadState($stateID, 'authswitcher:authswitcher', true);
+if (empty($_GET['stateId'])) {
+	exit;
+}
+
+$state = State::loadState($_GET['stateId'], 'authswitcher:authswitcher', true);
 $t->data[SwitchAuth::PARAM_MFA_REDIRECT_URL] = $state[SwitchAuth::PARAM_MFA_REDIRECT_URL];
 
 $t->show();