PAC Error -401 Unable to Authorize transaction

[Beno]

Sorry, bit confused… Node-RED version conflicts with Node-RED version?

You can always install a specific version of a Node, but that wont work for Node-RED itself.

Install older version/specific version of a node-red node?

I updated to the latest version of node-red-contrib-modbus on my groov RIO and it seems to have broken the flex-write node? Is there a way to install the older version of node-red-contrib-modbus again? It was working fine with v5.13.1 of the modbus node, but I get the following error since installing v5.14.0. Error: Modbus exception 4: Slave device failure (device reports internal error) at ModbusRTU._onReceive (/home/dev/.node-red/node_modules/modbus-serial/index.js:348:21) at TcpPor…