Windchill home page always keeps loading with error "Uncaught ReferenceError: FALSE_FUNC is not defined" in Windchill PDMLink

• Windchill home page always keeps loading with error "Uncaught ReferenceError: FALSE_FUNC is not defined" in Windchill PDMLink 
• User can login successfully, but the home page is always loading
• No error message in Method Server and Apache Logs
• Browser console displays JavaScript error below:

app/:13 
       GET http://<test.ptc.com>/Windchill/netmarkets/css/windchill-base.css net::ERR_ABORTED 404 (Not Found)
app/:14 
       GET http://<test.ptc.com>/Windchill/netmarkets/javascript/ext/resources/css/ext-sandbox.css net::ERR_ABORTED 404 (Not Found)
app/:16 
       GET http://<test.ptc.com>/Windchill/ext/custom.css net::ERR_ABORTED 404 (Not Found)
app/:26 
       GET http://<test.ptc.com>/Windchill/apps/Windchill/jquery_noconflict.js net::ERR_ABORTED 404 (Not Found)
app/:17 
       GET http://<test.ptc.com>/Windchill/netmarkets/javascript/util/windchill-libs.js net::ERR_ABORTED 404 (Not Found)
app/:18 
       GET http://<test.ptc.com>/Windchill/netmarkets/javascript/ext/adapter/ext/ext-base.js net::ERR_ABORTED 404 (Not Found)
app/:15 
       GET http://<test.ptc.com>/Windchill/netmarkets/themes/windchill/xtheme-windchill.css net::ERR_ABORTED 404 (Not Found)
app/:19 
       GET http://<test.ptc.com>/Windchill/netmarkets/javascript/util/ext-and-extensions.js net::ERR_ABORTED 404 (Not Found)
app/:20 
       GET http://<test.ptc.com>/Windchill/netmarkets/javascript/util/jstable-all.js net::ERR_ABORTED 404 (Not Found)
app/:21 
       GET http://<test.ptc.com>/Windchill/netmarkets/javascript/util/windchill-all.js net::ERR_ABORTED 404 (Not Found)
app/:22 
       GET http://<test.ptc.com>/Windchill/netmarkets/javascript/navigation/navigationToExternal.js net::ERR_ABORTED 404 (Not Found)
app/:23 
       GET http://<test.ptc.com>/Windchill/core-ui/2.2/lib/jquery.min.js net::ERR_ABORTED 404 (Not Found)
app/:24 
       GET http://<test.ptc.com>/Windchill/core-ui/2.2/lib/jquery-ui/jquery-ui-custom.min.js net::ERR_ABORTED 404 (Not Found)
app/:25 
       GET http://<test.ptc.com>/Windchill/core-ui/2.2/lib/angular/angular.min.js net::ERR_ABORTED 404 (Not Found)
app/:30 Uncaught ReferenceError: PTC is not defined
    at app/:30:5
(anonymous) @ app/:30
app/:36 Uncaught ReferenceError: FALSE_FUNC is not defined
    at app/:36:5
(anonymous) @ app/:36
app/:446 Uncaught ReferenceError: PTC is not defined
    at app/:446:1
(anonymous) @ app/:446
app/:998 Uncaught ReferenceError: PTC is not defined
    at app/:998:9
(anonymous) @ app/:998
app/:1012 Uncaught ReferenceError: PTC is not defined
    at app/:1012:30
(anonymous) @ app/:1012
app/:1015 Uncaught ReferenceError: PTC is not defined
    at app/:1015:29
(anonymous) @ app/:1015
app/:994 
       GET http://<test.ptc.com>/Windchill/netmarkets/images/sp.gif 404 (Not Found)
app/:1251 
       GET http://<test.ptc.com>/Windchill/templates/htmlcomp/cs/csusage.js net::ERR_ABORTED 404 (Not Found)
app/:53 Uncaught ReferenceError: initwcshell is not defined
    at onload (app/:53:48)
onload @ app/:53
VM69:1 Uncaught ReferenceError: PTC is not defined
    at <anonymous>:1:1
(anonymous) @ VM69:1
setTimeout (async)
(anonymous) @ app/:1004