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3283629 - Web Dynpro app launched from Fiori Launchpad is hanging

Symptom

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)


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Environment

SAP_UI 754

Keywords

Webdynpro, WDA, wda_ls_main , KBA , BC-WD-ABA , Web Dynpro ABAP , CA-FLP-FE-AI , Fiori Launchpad Application Integration , Problem

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