Gardena binding: COMMUNICATION_ERROR: HTTP protocol violation: Authentication challenge without WWW-Authenticate header

Add-ons Bindings
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1

Hi!
The Gardena binding stopped working for me.
I did not change anything related to the Gardena binding.

I do not know where to start to fix the error message.

2021-07-11 12:20:16.551 [WARN ] [ternal.handler.GardenaAccountHandler] - org.eclipse.jetty.client.HttpResponseException: HTTP protocol violation: Authentication challenge without WWW-Authenticate header

Any idea where to start?

runtimeInfo:
version: 3.1.0
buildString: Release Build
locale: de-DE
systemInfo:
configFolder: /etc/openhab
userdataFolder: /var/lib/openhab
logFolder: /var/log/openhab
javaVersion: 11.0.11
javaVendor: Azul Systems, Inc.
javaVendorVersion: Zulu11.48+21-CA
osName: Linux
osVersion: 4.19.0-17-amd64
osArchitecture: amd64
availableProcessors: 4
freeMemory: 33868264
totalMemory: 233832448

2

Although this is just a warning

in this case it seems to give a hint to the problem.
See very last part in the documentation ( create a new API key ):

3

Great. Thanks for the hint. I did not see the troubleshooting section in the binding documentation.
Clicking on “Renew API key” and using the new API key solved the issue.

I wonder what the lifetime of such an API key is though.

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