While loading dashboard, all the widgets flicker and show a spinner but none of them load resulting in blank pageIssue <!-- div.margin{ padding: 10px 40px 40px 30px; } table.tocTable{ border: 1px solid; border-color:#E0E0E0; background-color: rgb(245, 245, 245); padding-top: .6em; padding-bottom: .6em; padding-left: .9em; padding-right: .6em; } table.noteTable{ border:1px solid; border-color:#E0E0E0; background-color: rgb(245, 245, 245); width: 100%; border-spacing:2; } table.internaltable { white-space:nowrap; text-align:left; border-width: 1px; border-collapse: collapse; font-size:14px; width: 85%; } table.internaltable th { border-width: 1px; padding: 5px; border-style: solid; border-color: rgb(245, 245, 245); background-color: rgb(245, 245, 245); } table.internaltable td { border-width: 1px; padding: 5px; border-style: solid; border-color: #E0E0E0; color: #000000; } .title { color: #D1232B; font-weight:normal; font-size:28px; } h1{ color: #D1232B; font-weight:normal; font-size:21px; margin-bottom:-5px } h2{ color: #646464; font-weight:bold; font-size:18px; } h3{ color: #000000; font-weight:BOLD; font-size:16px; text-decoration:underline; } h4{ color: #646464; font-weight:BOLD; font-size:15px; text-decoration:; } h5{ color: #000000; font-weight:BOLD; font-size:13px; text-decoration:; } h6{ color: #000000; font-weight:BOLD; font-size:14px; text-decoration:; } ul{ list-style: disc outside none; margin-left: 0; } li { padding-left: 1em; } --> Symptoms While loading a dashboard, all the widgets show spinner or show "Loading" icon but they never load Cause There is an error in browser console with following error stack trace: js_includes_dashboards_2.jsx?v=05-24-2018_1317&lp=Fri_Aug_10_21_02_18_PDT_2018&c=31_354:39207 Uncaught TypeError: Cannot read property 'id' of undefined at Object.success (js_includes_dashboards_2.jsx?v=05-24-2018_1317&lp=Fri_Aug_10_21_02_18_PDT_2018&c=31_354:39207) at i (js_includes_dashboards.jsx?v=05-24-2018_1317&lp=Fri_Aug_10_21_02_18_PDT_2018&c=31_354:24018) at Object.fireWith [as resolveWith] (js_includes_dashboards.jsx?v=05-24-2018_1317&lp=Fri_Aug_10_21_02_18_PDT_2018&c=31_354:24018) at z (js_includes_dashboards.jsx?v=05-24-2018_1317&lp=Fri_Aug_10_21_02_18_PDT_2018&c=31_354:24020) at XMLHttpRequest.<anonymous> (js_includes_dashboards.jsx?v=05-24-2018_1317&lp=Fri_Aug_10_21_02_18_PDT_2018&c=31_354:24020) 2js_includes_concourse.jsx?v=05-24-2018_1317&lp=Fri_Aug_10_21_02_18_PDT_2018&c=31_354:5602 amb.MessageClient [INFO] >>> connection exists, request satisfied Resolution The issue is due to an invalid sys_user_preference value for "com.snc.pa.ui.preferences_dashboards" To resolve the issue for affected user perform steps below: 1. As an admin user go to sys_user_preference_list.do 2. Filter for name = com.snc.pa.ui.preferences_dashboards and User = affected user's name 3. select the record and delete. 4. User should Log out and log in again after deleting the preferences. Clearing the user preference for com.snc.pa.ui.preferences_dashboards, the user will lose some saved preferences as recently visited, last visited dashboard or any customizations the user has saved for dashboards.