diff --git a/libraries/default/InboxProcessors/LocalToolInboxProcessor.php b/libraries/default/InboxProcessors/LocalToolInboxProcessor.php
index 8852f9e..2dacab8 100644
--- a/libraries/default/InboxProcessors/LocalToolInboxProcessor.php
+++ b/libraries/default/InboxProcessors/LocalToolInboxProcessor.php
@@ -159,9 +159,9 @@ class LocalToolInboxProcessor extends GenericInboxProcessor
     {
         return $validator
             ->requirePresence('connectorName')
-            ->notEmpty('connectorName', 'The connector name must be provided')
+            ->notEmptyString('connectorName', 'The connector name must be provided')
             ->requirePresence('cerebrateURL')
-            ->notEmpty('cerebrateURL', 'A url must be provided')
+            ->notEmptyString('cerebrateURL', 'A url must be provided')
             ->requirePresence('local_tool_id')
             ->numeric('local_tool_id', 'A local_tool_id must be provided')
             ->requirePresence('remote_tool_id')
diff --git a/libraries/default/InboxProcessors/UserInboxProcessor.php b/libraries/default/InboxProcessors/UserInboxProcessor.php
index 53312d5..abb9550 100644
--- a/libraries/default/InboxProcessors/UserInboxProcessor.php
+++ b/libraries/default/InboxProcessors/UserInboxProcessor.php
@@ -37,13 +37,13 @@ class RegistrationProcessor extends UserInboxProcessor implements GenericInboxPr
     protected function addValidatorRules($validator)
     {
         return $validator
-            ->notEmpty('username', 'A username must be provided.')
+            ->notEmptyString('username', 'A username must be provided.')
             ->add('email', 'validFormat', [
                 'rule' => 'email',
                 'message' => 'E-mail must be valid'
             ])
-            ->notEmpty('first_name', 'A first name must be provided')
-            ->notEmpty('last_name', 'A last name must be provided')
+            ->notEmptyString('first_name', 'A first name must be provided')
+            ->notEmptyString('last_name', 'A last name must be provided')
             ->add('password', 'password_complexity', [
                 'rule' => function($value, $context) {
                     if (!preg_match('/^((?=.*\d)|(?=.*\W+))(?![\n])(?=.*[A-Z])(?=.*[a-z]).*$|.{16,}/s', $value) || strlen($value) < 12) {
diff --git a/src/Controller/SharingGroupsController.php b/src/Controller/SharingGroupsController.php
index e03aee5..41a4c66 100644
--- a/src/Controller/SharingGroupsController.php
+++ b/src/Controller/SharingGroupsController.php
@@ -113,6 +113,7 @@ class SharingGroupsController extends AppController
     public function delete($id)
     {
         $currentUser = $this->ACL->getUser();
+        $params = [];
         if (empty($currentUser['role']['perm_admin'])) {
             $params['conditions'] = ['organisation_id' => $currentUser['organisation_id']];
         }
diff --git a/tests/Helper/ApiTestTrait.php b/tests/Helper/ApiTestTrait.php
index 4b3986f..3e71622 100644
--- a/tests/Helper/ApiTestTrait.php
+++ b/tests/Helper/ApiTestTrait.php
@@ -56,6 +56,7 @@ trait ApiTestTrait
 
         // somehow this is not set automatically in test environment
         $_SERVER['HTTP_AUTHORIZATION'] = $authToken;
+        $_SERVER['REMOTE_ADDR'] = '127.0.0.1';
 
         $this->configRequest([
             'headers' => [