3623298 - SAP BPC WEB error: screen stuck at 'querying available environments'

The screen is stuck with the message 'Querying available environments' while accessing SAP BPC from web.

• Assertion failed: could not find any translatable text for key 'sequense' in bundle 'resources/i18n/messagebundle_homepage.properties'
• GET https://<hostname>:<port>/sap/epm/bpc/web/customize.json 404 (Not Found)
• GET https://<hostname>:<port>/sap/epm/bpc/web/themes/bas/customer.css net::ERR_ABORTED 404 (Not Found)
• GET https://<hostname>:<port>/sap/bw/ina/GetServerInfo?sap-client=300&sap-language=EN×tamp=1743574978597&sap-sessionviaurl=X 400 (Bad Request)
• Uncaught sap.epm.ui.common.Exception

The following error is found in the Fiddler trace:

• Text=System alias 'XXX' does not exist. Diagnosis An SAP system alias was deleted after it had been used to process Generic Service Data Objects (GSDOs). These GSDOs have been sent to a consumer together with their SAP system alias information. But this alias no longer exists. SAP Gateway cannot connect to the corresponding SAP business system because of the missing system alias. System Response Requests from a consumer for these GSDOs cannot be processed by SAP Gateway. Procedure Carry out one of the following options: Create the SAP system alias again and make sure it points to the same SAP business system as before. Delete the corresponding GSDOs from the consumer database. Procedure for System Administration" 

• SAP Business Planning and Consolidation, version for SAP BW/4HANA
• SAP Business Planning and Consolidation, version for SAP NetWeaver 

sap bpc, web error, querying available environments, assertion failed, customize.json not found, customer.css net::ERR_ABORTED, GetServerInfo bad request, sap.epm.ui.common.Exception, system alias , KBA , EPM-BPC-NW-WEB , Web , Problem