How can I put a link between my SCP destination and Node.js application?

I have a problem, I have to connect Chatbot from SAP CAI with an Onpremise database.

I put a connection with cloud connector and destination and I have deployed my application on SAP Cloud Platform. With this link that I had, I have a 401/403 Authentication Problem in SAP CAI.

How can I put a link between my SCP destination and Node.js application?

Thank you very much