PowerBI report server installation error

Hi,

While reinstalling PowerBI May 2020 we are getting the below error in the event log. Can anybody help?

Product: Microsoft Power BI Report Server -- Something went wrong, please find details in setup logs.CallStack:
Unhandled Exception: System.Exception: XmlException -    at System.Xml.XmlTextReaderImpl.Throw(Exception e)
   at System.Xml.XmlTextReaderImpl.ParseDocumentContent()
   at System.Xml.XmlLoader.Load(XmlDocument doc, XmlReader reader, Boolean preserveWhitespace)
   at System.Xml.XmlDocument.Load(XmlReader reader)
   at System.Xml.XmlDocument.Load(String filename)
   at Microsoft.BIServer.Setup.MigrateSettingsStep.MigrateMachineKeyFromWebToRsConfig()
   at SetupEngine.Install()
   at SetupEngine.Execute()
   at Microsoft.BIServer.Setup.Setup.Main(String cmdLine)
   at Microsoft.BIServer.Setup.Setup.Main(String cmdLine)

Regards,

Amiya