MyQ garage doors not detected 
<!-- You must use the issue template below. -->
<!-- Please ensure you read the documentation before creating a support request. -->

**Describe The Problem:**
<!-- A clear and concise description of what the issue is. -->
Unable to add my 2 MyQ garage doors using HOOBS/HomeBridge.  When configured with username and password the garage doors are not detected by Homebridge.  The MyQ opener and two door sensors have a solid wifi connection and both function normally using the native MyQ app. 

**To Reproduce:**
<!-- Steps to reproduce the behavior. -->
Installed HOOBS. Installed myQ Homebridge via the HOOBS plugin page. I have triple checked username and password are correct. 

**Logs:**
<!-- In order to be helpful, include the relevant logs from Homebridge, if applicable. -->

```
8/15/2021, 11:17:23 PMmyQ Bridge starting
8/15/2021, 11:17:29 PMmyQ BridgeLoaded plugin 'homebridge-myq'
8/15/2021, 11:17:29 PMmyQ BridgeLoading 1 platforms...
8/15/2021, 11:17:29 PMmyQ BridgeBridge is running on port 51826.
8/15/2021, 11:25:20 PMmyQ BridgeWARNINGunhandled rejection: TypeError: Cannot read property 'getAttribute' of null
```

**Homebridge Configuration:**

```
{
    "platform": "myQ",
    "email": "myemailaddress@email.com",
    "password": "myMyQpassword"
}
```

**Screenshots:**
<!-- If applicable, add screenshots to help explain your problem. -->

**Environment:**

* **HOOBS Version:** 4.0.100
* **Homebridge-myQ Plugin Version**: 2.6.3
* **Apple Device and iOS / macOS / iPadOS / tvOS Version:**<!-- Type of Apple device you're using and associated OS version --> iPhone 14.7
* **Operating System and OS Version:** <!-- Raspbian / Ubuntu / Debian / Windows / macOS / Docker -->
MacOS 11.4
<!-- Click the "Preview" tab before you submit to ensure the formatting is correct. -->

