Invalid endpoint error while usingnode-red-contrib-opcua on IBM Cloud

Hi mates,
I am trying to connect Kepware opc server installed on my local windows pc to Node-red hosted on IBM cloud. i am using node-red-contrib-opcua to collect data from Kepware and facing below error. Is this a certificate issue if so how can i get it as it is on IBM cloud?
''Invalid endpoint opctcpxxxxx Error: Connection cannot be established with server opctcpxx"

I couldn't face any issue with node red hosted on local PC. I can connect and see the values of Kepware opc server.