From c9005b2a70c3084a5755ca804c0f208b91c8d5c3 Mon Sep 17 00:00:00 2001
From: Florian Thoma <florian.thoma@innoweb.com.au>
Date: Mon, 11 Jun 2018 08:07:37 +0200
Subject: [PATCH] add check for currentl controller

---
 model/Versioned.php | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/model/Versioned.php b/model/Versioned.php
index d25b0365e..d5a54d7ee 100644
--- a/model/Versioned.php
+++ b/model/Versioned.php
@@ -1215,9 +1215,13 @@ class Versioned extends DataExtension implements TemplateGlobalProvider {
 	 * @param SS_HTTPRequest|null $request
 	 */
 	public static function choose_site_stage(SS_HTTPRequest $request = null) {
-		if (!$request) {
+		if (!$request && Controller::has_curr()) {
 			$request = Controller::curr()->getRequest();
 		}
+		if (!$request) {
+			throw new InvalidArgumentException("Request not found");
+		}
+		
 		$mode = static::get_default_reading_mode();
 
         // Check any pre-existing session mode