I’ve seen entries in the log like: Order does not exist, what does it mean?

This type of error in the MoonBot terminal’s log means that an old Binance bug has appeared, but it’s still relevant. It means that API GET /api/v3/order function to check order status returns error “Order does not exist”, although the order actually exists. Due to this error, it is impossible to check the order status to see if it has executed partially or completely, or if it has yet to be executed.
Binance states that the time during which the state of the order is not defined, no more than 1 second in a quiet market, and 10 seconds during high volatility, but in reality the values may be much higher. If these errors occur, you should contact Binance technical support directly with logs.