From d2c7d424de61b68ebe52a0382e8f8f3312b50728 Mon Sep 17 00:00:00 2001
From: mike12345567 <me@michaeldrury.co.uk>
Date: Mon, 13 Sep 2021 09:00:14 +0100
Subject: [PATCH] Fix for issue #2593.

---
 packages/auth/src/db/utils.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/packages/auth/src/db/utils.js b/packages/auth/src/db/utils.js
index 99aef0287d..4c4bae565b 100644
--- a/packages/auth/src/db/utils.js
+++ b/packages/auth/src/db/utils.js
@@ -67,6 +67,9 @@ function getDocParams(docType, docId = null, otherProps = {}) {
  * @return {null|string} The tenant ID found within the app ID.
  */
 exports.getTenantIDFromAppID = appId => {
+  if (!appId) {
+    return null
+  }
   const split = appId.split(SEPARATOR)
   const hasDev = split[1] === DocumentTypes.DEV
   if ((hasDev && split.length === 3) || (!hasDev && split.length === 2)) {