diff --git a/CRM/Core/Task.php b/CRM/Core/Task.php
index aab7757d3e4f..3ef3690a722e 100644
--- a/CRM/Core/Task.php
+++ b/CRM/Core/Task.php
@@ -47,7 +47,7 @@ abstract class CRM_Core_Task {
    *
    * @var array
    */
-  public static $_tasks = NULL;
+  public static $_tasks = [];
 
   /**
    * @var string
diff --git a/CRM/Member/Task.php b/CRM/Member/Task.php
index f9f7589ae8f3..dd04d9e062f8 100644
--- a/CRM/Member/Task.php
+++ b/CRM/Member/Task.php
@@ -151,7 +151,7 @@ public static function taskTitles() {
    *   set of tasks that are valid for the user
    */
   public static function permissionedTaskTitles($permission, $params = []) {
-    $tasks = self::getTitlesFilteredByPermission(self::$_tasks, $permission === CRM_Core_Permission::EDIT);
+    $tasks = self::getTitlesFilteredByPermission(self::tasks(), $permission === CRM_Core_Permission::EDIT);
     return parent::corePermissionedTaskTitles($tasks, $permission, $params);
   }
 
@@ -165,8 +165,7 @@ public static function permissionedTaskTitles($permission, $params = []) {
    *   the set of tasks for a group of members
    */
   public static function getTask($value) {
-    self::tasks();
-    if (!$value || empty(self::$_tasks[$value])) {
+    if (!$value || empty(self::tasks()[$value])) {
       // Make the print task the default
       $value = self::TASK_PRINT;
     }
diff --git a/api/v3/Profile.php b/api/v3/Profile.php
index eb78e51e0dfe..742af495fad6 100644
--- a/api/v3/Profile.php
+++ b/api/v3/Profile.php
@@ -604,6 +604,7 @@ function _civicrm_api3_buildprofile_submitfields($profileID, $optionsBehaviour,
        */
     }
   }
+  $profileFields[$profileID] = $profileFields[$profileID] ?? [];
   uasort($profileFields[$profileID], "_civicrm_api3_order_by_weight");
   return $profileFields[$profileID];
 }