Gantt timeline is not loading in Service PortalDescription<!-- 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 The issue is that the Gantt Timeline on 'project_status' Service Portal does not load, and it gets stuck on "Loading...". Error in browser console: TypeError: PWHelpers.toMomentFormat is not a functionat eval (psp-gantt.js:31)at processQueue (js_includes_sp.jsx?v=09-20-2018_1217&lp=Wed_Dec_19_21_20_55_PST_2018&c=26_516:14221)at js_includes_sp.jsx?v=09-20-2018_1217&lp=Wed_Dec_19_21_20_55_PST_2018&c=26_516:14236at Scope.$eval (js_includes_sp.jsx?v=09-20-2018_1217&lp=Wed_Dec_19_21_20_55_PST_2018&c=26_516:14789)at Scope.$digest (js_includes_sp.jsx?v=09-20-2018_1217&lp=Wed_Dec_19_21_20_55_PST_2018&c=26_516:14697)at Scope.$apply (js_includes_sp.jsx?v=09-20-2018_1217&lp=Wed_Dec_19_21_20_55_PST_2018&c=26_516:14816)at done (js_includes_sp.jsx?v=09-20-2018_1217&lp=Wed_Dec_19_21_20_55_PST_2018&c=26_516:11439)at completeRequest (js_includes_sp.jsx?v=09-20-2018_1217&lp=Wed_Dec_19_21_20_55_PST_2018&c=26_516:11556)at XMLHttpRequest.requestLoaded (js_includes_sp.jsx?v=09-20-2018_1217&lp=Wed_Dec_19_21_20_55_PST_2018&c=26_516:11506) Release All releases Cause One of the causes of this would be customized widgets. Project status portal overview [psp-overview] is the main widget which has at least 3 embedded widgets. In this case, the cause was the Project Status Portal Gantt [psp-gantt] widget because it was calling PWHelpers in the Client Controller. In out of box instance, this does not exist. Resolution Confirm that all widgets (including embedded) are out of box, and have not skipped during an upgrade. If a customized widget is found, revert to out of box.