What is this error related to? (Windows Server 2022)

```
TypeError: Cannot read properties of undefined (reading 'oldTryoutComplete')
    at Timeout._onTimeout (C:\yt2009\back\yt2009channels.js:2549:25)
    at listOnTimeout (node:internal/timers:605:17)
    at process.processTimers (node:internal/timers:541:7)
```

Also, after this error, the frontend loads slowly