How to setup FCM at firebase project and getting server key
- If you don't have firebase project, follow the video below and create one
- If you have one already, skip this step
- Go to firebase Project Settings and click Cloud Messaging tab
- Check Cloud Messaging API (Legacy) Section, find three dots on the top right corner and click on it
- It will open a box like below, click on it.

- This will lead you to Cloud Console like below.
- Click on Enable button.

- Then come back to firebase project and refresh the page. And you can see FMC token . Copy that

- This way you can get Server key for FCM configuration.