UE4 throws exception when using Airsim

[wagh311]

Bug report

• AirSim Version/#commit:1.2
• UE/Unity version:4.27
• autopilot version:
• OS Version:Win10

What's the issue you encountered?

I am using deep reinforcement learning to train multiple drones, but during the training process, UE4 often throws exceptions, causing the simulation to interrupt. I want to know what is causing this?

Settings

`{ "SeeDocsAt": "https://github.com/Microsoft/AirSim/blob/master/docs/settings.md", "SettingsVersion": 1.2, "CameraDefaults": { "CaptureSettings": [ { "ImageType": 0, "Width": 640, "Height": 480, "FOV_Degrees": 90 }, { "ImageType": 1, "Width": 320, "Height": 240, "FOV_Degrees": 90 }, { "ImageType": 2, "Width": 84, "Height": 84, "FOV_Degrees": 90 }, { "ImageType": 3, "Width": 320, "Height": 240, "FOV_Degrees": 90 }, { "ImageType": 4, "Width": 320, "Height": 240, "FOV_Degrees": 90 }, { "ImageType": 5, "Width": 320, "Height": 240, "FOV_Degrees": 90 } ] }, "SimMode": "Multirotor", "ClockSpeed": 5, "Vehicles": { "UAV0": { "VehicleType": "SimpleFlight",

  "X": 0,
  "Y": 0,
  "Z": 0,
  "Yaw": 0,
  "Sensors": {
    "Distance0": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": 0,
      "MaxDistance": 10
    },
    "Distance1": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": 30,
      "MaxDistance": 10
    },
    "Distance2": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": 60,
      "MaxDistance": 10
    },
    "Distance3": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": 90,
      "MaxDistance": 10
    },
    "Distance4": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": 120,
      "MaxDistance": 10
    },
    "Distance5": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": 150,
      "MaxDistance": 10
    },
    "Distance6": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": 180,
      "MaxDistance": 10
    },
    "Distance7": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": -30,
      "MaxDistance": 10
    },
    "Distance8": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": -60,
      "MaxDistance": 10
    },
    "Distance9": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": -90,
      "MaxDistance": 10
    },
    "Distance10": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": -120,
      "MaxDistance": 10
    },
    "Distance11": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": -150,
      "MaxDistance": 10
    }
  }
},
"UAV1": {
  "VehicleType": "SimpleFlight",
  "X": 5,
  "Y": 0,
  "Z": 0,
  "Yaw": 0,
  "Sensors": {
    "Distance0": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": 0,
      "MaxDistance": 10
    },
    "Distance1": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": 30,
      "MaxDistance": 10
    },
    "Distance2": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": 60,
      "MaxDistance": 10
    },
    "Distance3": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": 90,
      "MaxDistance": 10
    },
    "Distance4": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": 120,
      "MaxDistance": 10
    },
    "Distance5": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": 150,
      "MaxDistance": 10
    },
    "Distance6": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": 180,
      "MaxDistance": 10
    },
    "Distance7": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": -30,
      "MaxDistance": 10
    },
    "Distance8": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": -60,
      "MaxDistance": 10
    },
    "Distance9": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": -90,
      "MaxDistance": 10
    },
    "Distance10": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": -120,
      "MaxDistance": 10
    },
    "Distance11": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": -150,
      "MaxDistance": 10
    }
  }
},
"UAV2": {
  "VehicleType": "SimpleFlight",
  "X": -5,
  "Y": 0,
  "Z": 0,
  "Yaw": 0,
  "Sensors": {
    "Distance0": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": 0,
      "MaxDistance": 10
    },
    "Distance1": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": 30,
      "MaxDistance": 10
    },
    "Distance2": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": 60,
      "MaxDistance": 10
    },
    "Distance3": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": 90,
      "MaxDistance": 10
    },
    "Distance4": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": 120,
      "MaxDistance": 10
    },
    "Distance5": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": 150,
      "MaxDistance": 10
    },
    "Distance6": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": 180,
      "MaxDistance": 10
    },
    "Distance7": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": -30,
      "MaxDistance": 10
    },
    "Distance8": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": -60,
      "MaxDistance": 10
    },
    "Distance9": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": -90,
      "MaxDistance": 10
    },
    "Distance10": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": -120,
      "MaxDistance": 10
    },
    "Distance11": {
      "SensorType": 5,
      "Enabled": true,
      "DrawDebugPoints": true,
      "Yaw": -150,
      "MaxDistance": 10
    }
  }
},
"UAV3": {
  "VehicleType": "SimpleFlight",
  "X": 0,
  "Y": 10,
  "Z": 0,
  "Yaw": 0
}

} }`

How can the issue be reproduced?

I'm using deep reinforcement learning to train multiple drones and this question comes up quite often. I'm using a block environment and adding some cylinders as obstacles.

Include full error message in text form

What's better than filing an issue? Filing a pull request :).