Ferry API failing under some scenarios

[SamEdwardes]

For example, these inputs are failing:

[
    {
        "Departing": "bainbridge island",
        "Arriving": "seattle",
        "Month": 7,
        "Weekday": 4,
        "Hour": 12,
        "ClassName": "olympic",
        "SpeedInKnots": 17,
        "EngineCount": 2,
        "Horsepower": 6000,
        "MaxPassengerCount": 1500,
        "PassengerOnly": null,
        "FastFerry": null,
        "PropulsionInfo": "diesel",
        "YearBuilt": 2015,
        "YearRebuilt": 2024,
        "departing_weather_code": 0,
        "departing_temperature_2m": 10,
        "departing_precipitation": null,
        "departing_cloud_cover": 54,
        "departing_wind_speed_10m": 12,
        "departing_wind_direction_10m": 0,
        "departing_wind_gusts_10m": 26,
        "arriving_weather_code": 0,
        "arriving_temperature_2m": 10,
        "arriving_precipitation": null,
        "arriving_cloud_cover": 54,
        "arriving_wind_speed_10m": 12,
        "arriving_wind_direction_10m": 0,
        "arriving_wind_gusts_10m": 26
    }
]

I don't have access to the API logs so I can't see what went wrong yet.