Ah sorry, just not get use to screenshots like that. Is not very friendly to read.
Why you just don’t paste script and use Tag Code to display code nicely?
See ** Using code tags properly **
So lets start from beggining.
First debug log after jsonString. Lets see, what you read from the file.
Then out Debug break point, just after FromJson line, and investigate manually content of Bonzo.
When you check, describe what you have read. Then we will pick from there.