Creating new comment and post is not working: RangeError (index): Invalid value: Only valid value is 0: 1

Getting a lot of errors when I try to add a post or comment.

`Failed to comment: RangeError (index): Invalid value: Only valid value is 0: 1`

```
I/flutter (17327): Failed to create post: NoSuchMethodError: The getter 'length' was called on null.
I/flutter (17327): Receiver: null
I/flutter (17327): Tried calling: length
```

How can we solve this?