3283629 - Web Dynpro app launched from Fiori Launchpad is hanging

While opening Web Dynpro apps from Fiori Launchpad, the app hangs and shows the loading information (busy indicator).
The development tools of the browser shows the following error: 

wda_ls_main.js?version=20210913-122921:38 Uncaught TypeError: this.commands[commandName] is not a function
    at SAPWD_AbstractApplication.exec (wda_ls_main.js?version=20210913-122921:38:27)
    at eval (eval at UCF_JsUtil.unsafeEval (lightspeed.js:14551:11), <anonymous>:3:15)
    at eval (eval at UCF_JsUtil.unsafeEval (lightspeed.js:14551:11), <anonymous>:4:4)
    at eval (eval at UCF_JsUtil.unsafeEval (lightspeed.js:14551:11), <anonymous>:5:3)
    at UCF_JsUtil.unsafeEval (lightspeed.js:14551:11)
    at UCF_JsUtil.eval (lightspeed.js:14687:20)
    at UCF_PageUpdater.callScript (lightspeed.js:54369:13)
    at UCF_PageUpdater.processUpdateParts (lightspeed.js:53783:13)
    at UCF_PageUpdater.processScriptCalls (lightspeed.js:53834:7)
    at o (lightspeed.js:53852:8)

ABAP PLATFORM 1909 - Application Server ABAP (SAP_UI 7.54)

Webdynpro, WDA, wda_ls_main, Web Dynpro WDA , KBA , CA-FLP-ABA , SAP Fiori Launchpad ABAP Services , BC-WD-ABA , Web Dynpro ABAP , CA-FLP-FE-AI , Application iframe communication in FLP and Work Zone , Problem