From 4c26d325642c3781bba5b7f0be557fc952009da5 Mon Sep 17 00:00:00 2001
From: liumengyi <liumengyi@easycorp.ltd>
Date: Fri, 28 Jan 2022 13:20:14 +0800
Subject: [PATCH] * Fix bug #19126.

---
 module/kanban/control.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/module/kanban/control.php b/module/kanban/control.php
index 1e7d11cd91..69d36940c6 100644
--- a/module/kanban/control.php
+++ b/module/kanban/control.php
@@ -170,7 +170,7 @@ class kanban extends control
         $space      = $this->kanban->getSpaceById($spaceID);
         $spaceUsers = $spaceID == 0 ? ',' : trim($space->owner) . ',' . trim($space->team);
         $users      = $this->loadModel('user')->getPairs('noclosed|nodeleted', '', 0, $spaceUsers);
-        $whitelist  = isset($space->whitelist) ? $space->whitelist : '';
+        $whitelist  = isset($space->whitelist) and !empty($space->whitelist) ? $space->whitelist : ',';
 
         $this->view->users      = $users;
         $this->view->whitelist  = $this->user->getPairs('noclosed|nodeleted', '', 0, $whitelist);
@@ -208,7 +208,7 @@ class kanban extends control
         $space      = $this->kanban->getSpaceById($kanban->space);
         $spaceUsers = trim($space->owner) . ',' . trim($space->team);
         $users      = $this->loadModel('user')->getPairs('noclosed|nodeleted', '', 0, $spaceUsers);
-        $whitelist  = isset($space->whitelist) ? $space->whitelist : '';
+        $whitelist  = isset($space->whitelist) and !empty($space->whitelist) ? $space->whitelist : ',';
 
         $this->view->users      = $users;
         $this->view->whitelist  = $this->user->getPairs('noclosed|nodeleted', '', 0, $whitelist);