Error on connection for TTN application

I’ve setup a few days ago a LoRa Node and am using Node-Red. Everything worked perfectly finde until I received following error message in Node-Red:
“Error on connection for TTN application allora-push-button: Error: 14 UNAVAILABLE: Connect Failed”
image

I haven’t changed anything in the settings. Does anyone know what could cause the issue? I didn’t find any solution on Google yet.

A post was merged into an existing topic: Node-RED “Error: 14 UNAVAILABLE: Connect Failed” when using node-red-contrib-ttn