IKEA has released a new gateway firmware. (1.2.42)
With this version, a new encryption handshake was added.
So I had to adapt my plugin.
Because backward compatibility is not guaranteed,
Please update the gateway and the tradfri plugin to version 0.1.14
Disable the plugin in the config. Then you can start pimatic and make an update.
{
"plugin": "tradfri",
"active": false
}
Or you can just delete the tradfri-plugin folder and pimatic will download automatically the new version.