OPCUA Client on Debian Linux -- server Cert Path?

I am using node-red-contrib-opcua (latest) to make a simple flow involving OPCClient.

When run on a Windows machine, my flow works as expected (connects to remote OPC server, subscribes, etc).

When I deploy the same flow to node-red running on Debian Linux, the client goes into a reconnect loop and there is also a console logged error that I have an invalid endpoint.

When i look into the node-opcua code, I see that the default server certificates path is windows based (APPDATA prefix). How do I customize the server certificates path for the OPCClient node-red node on linux?