I try to send basic number to Firebase. I choose this node for send data to Firebase (https://flows.nodered.org/node/node-red-firebase)
I just try to send bassic timestamp to my firebase and the error appear as shown in the picture, What the credential mean? In node don't have any credential field. Did I miss anything?
PS. I try contrib-firebase node too. When I hit deploy button. Contrib-firebase node make my node-red service stop working. I even run it in node-red on my hassio on raspberry pi. It make my node red 502 Bad Gateway nginx
What i should do. Do you have any suggestions?
Anyone can help me.Thanks 
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