2719179 - Unable to use WebGUI apps on the Cloud Portal

When performing any action (like clicking on a button) on a WebGUI application on the Cloud Portal (Fiori Launchpad or Freestyle site), the following error is displayed:

Checking the HTTP traces of when opening the application, a 500 Error to a resource called init_websocket.js can be seen.

There is a simple test that allows to confirm if this is indeed the issue being faced:

1. Copy the requested URL for the init_websocket.js file that resulted in a 500 Error from the HTTP traces. The URL should look like this: https://system1<destination_name*><hash_value>-<subaccount_number>.dispatcher.<region>.hana.ondemand.com
   Anything that comes after the .com is not necessary for the test.
   *<destination_name> may only contain a part of the destination name in case it uses special characters or the value is too long.
   
   
2. Open the following URL on a browser tab: <url_from_step_1>/sap/public/icmandir/its/ls/js/classes/ItemListBox_ie6.js
   This URL should result in a 500 Error.
   
   
3. Open the following URL: <url_from_step_1>/sap/public/icmandir/its/ls/theming/UR/baseLib/baseTheme/img/popupwindow/warning.gif
   This URL should load a warning gif.

If the each of the URLs return the mentioned results, refer to the resolution section of the KBA for the steps to fix the issue.

• Cloud Portal
• Fiori Launchpad site (FLP@SCP)
• Freestyle site

ITS, its, webgui, webGUI, transaction, application, server connection not available - (click here to close), abap, backend, init_websocket.js, websocket, socket, connection, webui, not connected, tcode , KBA , compress , compress=0 , EP-CPP-NEO-SFC , Launchpad Site and SAP Fiori Cloud , BC-FES-ITS , SAP Internet Transaction Server , EP-CPP-NEO-FS , Freestyle sites , Problem