WTH: fix the 400 error from Nabu Casa in my logs

Month of "What the heck?!"
1

why do I keep on receiving this error (Fetched https://alexa-api.nabucasa.com/access_token (400)) from Nabu Casa in my logs?

![image|690x54](upload://6mueNAX8V0Ba6bbsQRCecNo2WOy.png)

Btw I have a subscription to Nabu Casa.