Firebase - Invalid JSON data or key values. Key values can’t contain $ # [ ] / or

Question

I\'m trying to import my JSON file into my Firebase but it keeps giving me this error. I don\'t know why this JSON file isn\'t allowed to be imported into since JSONLint say

Answer 1

This was happening for me as well, as a web developer, I looked into the Developers Console and the actual error was because of authentication that Firebase's console was not able to authenticate while validating the JSON files.

So I did a "refresh" of the web page and it worked.