Getting this error please help!

[HU022]

I get this error
Error when trying to open pin 11
gpio-admin: could not flush data to /sys/class/gpio/export: Device or resource busy
Raspberry pi 3b+
config.json:
`
{
"bridge": {
"name": "Homebridge3",
"username": "DC:22:3D:E3:CE:30",
"port": 4000,
"pin": "333-33-333"
},

"description": "This is an example configuration file with one fake accessory and one fake platform. You can use this as a template for creating your own configuration file containing devices you actually own.",
"ports": {
  "start": 52100,
  "end": 52150,
  "comment": "This section is used to control the range of ports that separate accessory (like camera or television) should be bind to."
},
"accessories": [
  {
    "accessory": "relay",
    "name": "Relay 1",
    "pin" : 11,
    "duration" : 0
  },
  {
    "accessory": "relay",
    "name": "Relay 2",
    "pin" : 12,
    "duration" : 0
  }
],

  
    "platform": "CameraUI",
    "videoProcessor": "ffmpeg",
    "cameras": [
      {
        "name": "Flur",
        "active": true,
        "videoConfig": {
          "source": "-f v4l2 -r 30 -s 1280x720 -i /dev/video0",
          "maxWidth": 1920,
          "maxHeight": 1080,
          "maxFPS": 30
        }
      }
    ]

}`

[marcgrc]

I get this error
Error when trying to open pin 11
gpio-admin: could not flush data to /sys/class/gpio/export: Device or resource busy

[clrmsc]

PLS HELP
Error when trying to open pin 7
gpio-admin: could not flush data to /sys/class/gpio/export: Device or resource busy