UniFi Protect Controller Firmware update causing 500 response (unable to retrieve NVR configuration)
**Describe The Problem:**
After updating to the latest version of Cloud Key Plus 2.5.11 Unifi protect plugin is unable to connect to my Cloud Key.

**To Reproduce:**
- Update Cloud Key Plus to version 2.5.11
- Restart homebrigde.io (make sure it's getting the NVR configuration information)

**Logs:**
```
[17/08/2022, 10:39:58] [UniFi Protect] API access error: 500 - Internal Server Error
[17/08/2022, 10:39:58] [UniFi Protect] 192.168.1.xxx: Unable to retrieve NVR configuration information from UniFi Protect. Will retry again later.
[17/08/2022, 10:39:59] [UniFi Protect] API access error: 500 - Internal Server Error
[17/08/2022, 10:39:59] [UniFi Protect] 192.168.1.xxx: Unable to retrieve NVR configuration information from UniFi Protect. Will retry again later.
[17/08/2022, 10:39:59] [UniFi Protect] API access error: 500 - Internal Server Error
[17/08/2022, 10:39:59] [UniFi Protect] 192.168.1.xxx: Unable to retrieve NVR configuration information from UniFi Protect. Will retry again later.
[17/08/2022, 10:39:59] [UniFi Protect] API access error: 500 - Internal Server Error
[17/08/2022, 10:39:59] [UniFi Protect] 192.168.1.xxx: Unable to retrieve NVR configuration information from UniFi Protect. Will retry again later.
```

**Homebridge Configuration:**

```json
{
            "controllers": [
                {
                    "address": "192.168.1.xxx",
                    "password": "***",
                    "username": "***"
                }
            ],
            "options": [
                "Disable.Video.HKSV.TimeshiftBuffer"
            ],
            "verboseFfmpeg": true,
            "platform": "UniFi Protect"
        },
```

**Environment:**

* **Homebridge Version:** 1.5.0
* **Node Version:** v16.15.0
* **Homebridge-UniFi-Protect Plugin Version:** v5.5.4
* **UniFi Protect Version:** 2.1.2
* **UniFi Protect Controller Type:** UCKgen2+
* **UniFi Protect Controller Firmware Version:** 2.5.11
* **Apple Device and iOS / macOS / iPadOS / tvOS Version:** _does not apply_
* **Operating System and OS Version:** Raspbian
