Api error with notify

Hello everyone, I’m a newie with home assistant and Nod-Red, i was trying to program an automation for my roller shutter so it can close when there is bad weather, but I cannot go past this API error… thank u for your help beforehand.

If you click that button near the bottom that says “Load example data” it will populate the Data field with an example you can modify. If you want to include a dynamic message you can use the syntax:
“message”: “{{payload}}”