[BUG] Streams on Docker are broken completely since 2.12.X

[vextv]

Checklist

• Have you pulled and found the error with jc21/nginx-proxy-manager:latest docker image?
  • Yes
• Are you sure you're not using someone else's docker image?
  • Yes
• Have you searched for similar issues (both open and closed)?
  • Yes / No

Describe the bug
Since any Version newer than 2.11.3 there seems to be a problem with saving the values you input to configure a stream. Any time you try to edit an already existing host and want to save your configuration (doesn't matter if you actually change any values or not) you get the error seen in the screenshot below.

Nginx Proxy Manager Version
2.12.X

To Reproduce
Steps to reproduce the behavior:

1. Go to 'Streams'
2. Click on 'Edit Stream' (you must already have one configured)
3. Enter '443' as incoming port
4. Enter an IP to Forward to (ex: 192.168.178.111)
5. Enter '8443' as 'Forward Port'
6. Click 'Save'
7. See error:
   

Expected behavior
In any version below 2.12.X you can enter this configuration and save it succesfully

Operating System
Standard Docker Container on Debian 12

Additional context
Tested in multiple Versions, the bug exists since "2.12.0" upwards

[DJaq02]

I have same problem. It occurs when Nginx Proxy Manager can't find the forward host. When the host is online you can delete the old Stream and create new and it will work. I also have found that Nginx Proxy Manager will crash if the forward host goes down. I have many times needed to delete Stream config files manually to get NPM to start again.