Prosecutors argued that because Trump recorded this personal transaction, it's magically a business transaction. The judge agreed. Then prosecutors argued that he falsified this magical business transaction (paid with personal funds, mind you), that is a crime.
This means that if you go to the store and write a check to Kroger for chocolate, but you recorded the transaction, that personal expense is now a business expense. If you recorded the chocolates as apples, so you wife doesn't learn that you're diet isn't going well, that is a criminal act. This is no exageration.
This judge was plucked three times (randomly for Trump related cases), and the odds of this randomly happening is far less than 1/1,000,000.
The fix was in and will eventually be overturned.