ReferenceError: MC is not defined

```
ReferenceError: MC is not defined
at Xua (evalmachine.:1:36)
at evalmachine.:1:165
at Script.runInContext (node:vm:141:12)
at Script.runInNewContext (node:vm:146:17)
at url (c:\Users\jakem\Desktop\Code\MusicBot\Calliope\node_modules\ytdl-core\lib\sig.js:88:22)
at Object.exports.setDownloadURL (c:\Users\jakem\Desktop\Code\MusicBot\Calliope\node_modules\ytdl-core\lib\sig.js:100:31)
at (c:\Users\jakem\Desktop\Code\MusicBot\Calliope\node_modules\ytdl-core\lib\sig.js:118:13)
at Array.forEach ()
at Object.exports.decipherFormats (c:\Users\jakem\Desktop\Code\MusicBot\Calliope\node_modules\ytdl-core\lib\sig.js:117:11)
at runMicrotasks ()
```

The latest version 4.11.2, happens with any song/video requested, I'm unable to trace it to anywhere specific in my code as the error is only within the node modules. Happens every time, and no video is downloaded/streamed. Has been working fine until yesterday with no problems, since yesterday it hasn't worked at all.