I upgraded CRM to 7.0 EhP4 and that time SAP Main Menu link to ECC worked fine. When I completed upgrade ECC from 7.0 to EHP8, the SAP Main menu is blank. If I run the url separately, the url that I maintained in SPRO-->CRM-->UI Framework-->Technical profile --> Transaction Launcher http://xxxxxxxxxx.crestron.crestron.com:8001/sap/bc/gui/sap/its/webgui/!
The url is working fine. Please help to resolve the issue ASAP.