Error installing Homebridge on macOS
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**Describe The Bug:**
I just runned the second command in macOS installation guide.

**To Reproduce:**
Run the first and then the second command in macOS installation guide.

**Logs:**
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```
sudo hb-service install
/usr/local/lib/node_modules/homebridge-config-ui-x/node_modules/axios/lib/cancel/Cancel.js:13
Cancel.prototype.toString = function toString() {
                          ^

TypeError: Cannot assign to read only property 'toString' of object '#<Cancel>'
    at Object.<anonymous> (/usr/local/lib/node_modules/homebridge-config-ui-x/node_modules/axios/lib/cancel/Cancel.js:13:27)
    at Module._compile (internal/modules/cjs/loader.js:1151:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1171:10)
    at Module.load (internal/modules/cjs/loader.js:1000:32)
    at Function.Module._load (internal/modules/cjs/loader.js:899:14)
    at Module.require (internal/modules/cjs/loader.js:1040:19)
    at require (internal/modules/cjs/helpers.js:72:18)
    at Object.<anonymous> (/usr/local/lib/node_modules/homebridge-config-ui-x/node_modules/axios/lib/axios.js:40:16)
    at Module._compile (internal/modules/cjs/loader.js:1151:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1171:10)
```

**Homebridge Config:**
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not present

**Environment:**

* **Node.js Version**: v13.8.0
* **NPM Version**: 6.14.9
* **Homebridge Version**:  1.1.6
* **Operating System**: macOS 11.0.1

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