Connecting to festo PLC with node-red-contrib-opcua

Hello there!

I having some trouble connecting to a PLC using the OPCUA client from node-red-contrib-opcua. The issue is that when I try to connect without a certificate I get the following error:

Invalid endpoint Error: Invalid lockfile specified :C:\Users\JK88UY\AppData\Roaming\node-red-opcua-nodejs\Config\PKI\own\certs\client_certificate.pem.lock

and

Invalid endpoint Error: Invalid lockfile specified :C:\Users\JK88UY\AppData\Roaming\node-red-opcua-nodejs\Config\PKI\own\private\private_key.pem

This file does not exist nor does the folders own and certs. Do I need to make the folders myself and generate the keys?

br
Martin