Open Roberta Connector: “Internet connection … interrupted”

[AHberta]

Describe the bug
When trying to connect a device via the Open Roberta Connector, the connector detects the device via USB, but after clicking “Connect” the UI shows the error message:

“Die Internetverbindung zum Open Roberta Lab ist unterbrochen.”

Even though the internet connection is available, no connection token is generated and the connection cannot be established.

To Reproduce
Steps to reproduce the behavior:

1. Start Open Roberta Connector
2. Connect a device via USB (device is shown as connected/detected in the connector)
3. Open Open Roberta Lab and click “Connect” (or initiate connection as usual)
4. The error message appears and no token is generated

Expected behavior
A connection token is generated and the device can be connected/used in Open Roberta Lab.

Screenshots

Device information
Type: Desktop / Laptop
OS: Windows 10/11 / macOS / Linux
Browser: Chrome/Firefox/Edge
Open Roberta Connector version: 1.6.8, 1.7.0
Device/Robot: Arduino Nano/UNO/Mega, SPIKE Prime, EV3, NAO, ....

[AHberta]

See OpenRoberta/openroberta-connector#59

or the following workaround

Please proceed as follows in the Open Roberta Connector:

• Open Open Roberta Connector
• Enable “Use another server”
• Enter the following values:
  IP: lab.open-roberta.org
  Port: leave empty
• Click “Connect” again and start the upload as usual