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try to POST FCM from Postman, but got error message "The request's Authentication (Server-) Key contained an invalid or malformed FCM-Token (a.k.a. IID-Token).

Error 401"

note: copy auth key from Project credentials-Server key

url : https://fcm.googleapis.com/fcm/send header Content-Type : application/json Authorization : key=AAAAQJ50ukk:Gf9m5PCwpwb1EG .....aovqy Body : { "to": "", "data": { "title":"Test" "message":"Test Message" } }

Tedi Sopyan
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  • Did you find any solution for this? – Raghav Satyadev Jun 28 '19 at 07:02
  • hello, i am facing the same issue, any chance you found any resolution for this. I am stuck on this from quite some time. – Davinder Singh Jul 24 '19 at 08:12
  • Hi, I have also facing same problem. Because i have used my previous fire base project. It means i have used existing fire base project google service.json in new ionic project. So when generate token it will not same. Thats the problem. – Karnan Muthukumar Jul 30 '19 at 14:41
  • https://stackoverflow.com/questions/37789264/api-key-for-gcm-is-suddenly-invalid-unauthorized-401-error/37801206#37801206 Look at this. It will help to you. – Karnan Muthukumar Jul 30 '19 at 14:42

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