Why is it using port 19990

[potestus]

Describe the bug
http://192.168.1.78:19990/library/status/

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
Port 9090 in settings

Screenshots

If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):
Qnap qts5

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
Add any other context about the problem here.