diff --git a/config/routes.php b/config/routes.php
index b0b906513..ffbe4e504 100644
--- a/config/routes.php
+++ b/config/routes.php
@@ -67,11 +67,13 @@ Router::scope('/', function (RouteBuilder $routes) {
               return true;
             }
             $allowedCaller = Configure::read('API.allowedCaller');
-              $callerIp = $request->clientIp();
-              foreach($allowedCaller as $allowed) {
-                $ip = gethostbyname($allowed);
-                if($ip === $callerIp) return true;
-              }
+            if($allowedCaller && count($allowedCaller) > 0) {
+                $callerIp = $request->clientIp();
+                foreach($allowedCaller as $allowed) {
+                  $ip = gethostbyname($allowed);
+                  if($ip === $callerIp) return true;
+                }
+            }
           }
         }
     });
diff --git a/mithril_client b/mithril_client
index a04d47699..21d4a0a5e 160000
--- a/mithril_client
+++ b/mithril_client
@@ -1 +1 @@
-Subproject commit a04d4769974b9d93ba72e490ed7dca3fbaed768c
+Subproject commit 21d4a0a5e9a19f251e26c0ae07ce74be2fa99bbf