Firebase deployment error

Question

I've deployed in the past many times before. For some reason, today I am getting this error I can't seem to fix. I've tried changing tabs out with 2 or 4 spaces. I've tried different formats, and nothing works.

Here's what it says:

Error: There was an error loading firebase.json

Trailing comma in object at 29:9
    }
    ^

Here is my firebase.json

{
    "database": {
        "rules": "database.rules.json"
    },
    "hosting": {
        "public": "public"
    }
}

How do I solve it?

PS: If you need anything else please ask.

Answer 1

Change your firebase json file to

{
  "database": {
    "rules": "database.rules.json"
  },
  "hosting": {
    "public": "public",
    "rewrites": [
    ]
  }
}

If you are still having issues then you also have to change your database file to

{
  "rules": {
    ".read": "auth != null",
    ".write": "auth != null"
  }
}

Answer 2

To anyone experiencing this problem, I solved mine by going to the file "database.rules.json", and removing the last comma in the line ".write": true,

{
  "rules": {
    ".read": true,
    ".write": true,
  }
}

It seems Firebase generated an invalid JSON.