I am not able to open node red, I am using node red since 2 weeks.but, this error is contineously running in command promt when I type node-red to start node red.
The error is coming from an opc-da server node you have in your flows.
You need to either fix the configuration of that node or, if you don't want it, remove the node entirely. It sounds like a Config node, so open up the Configuration Nodes sidebar and search for it in there.
If you run node-red --safe
it will start the editor but not run the flows. If that doesn't work then please post the full startup log here. Use the </> button when pasting it in.
Thanks, bur I already uninstalled and then reinsatlled the node red . Though I had my flows, there are lot of changes I had to do with respect to UI and even many graphs are not working . I am still doing changes.
Earlier I was using OPCUa read , now its not working I have to use subscrible to read the data and now sampling rate is very slow 6-7 data per second with subscribe in OPCUa. with another OPCUA node for another controller, read is working, so I am little confused.