Alexa does not work suddenly anymore and discovers nothing

have been running Openhab on my laptop for months without issue and suddenly Alexa does not work anymore. Started discovery via Alexa and all devices are not found.
Within my network via console all lights work.
Obviously i rebooted everything and no change.
Install on Ubuntu with Docker. openHAB 3.1.0.

I looked across toppings and could not see this as a common topic.

I set the log for the Cloud Client to trace and saw in the openhab.log the following message each time I tried to discover via Alexa.
2022-06-18 08:36:23.798 [DEBUG] [io.openhabcloud.internal.CloudClient] - on(): request
2022-06-18 08:36:23.985 [DEBUG] [io.openhabcloud.internal.CloudClient] - on(): request
2022-06-18 08:36:24.074 [DEBUG] [io.openhabcloud.internal.CloudClient] - on(): request
2022-06-18 08:36:31.798 [DEBUG] [io.openhabcloud.internal.CloudClient] - on(): cancel
2022-06-18 08:36:31.891 [DEBUG] [io.openhabcloud.internal.CloudClient] - on(): request
2022-06-18 08:36:31.964 [DEBUG] [io.openhabcloud.internal.CloudClient] - on(): cancel
2022-06-18 08:36:31.965 [DEBUG] [io.openhabcloud.internal.CloudClient] - on(): cancel
2022-06-18 08:36:32.096 [DEBUG] [io.openhabcloud.internal.CloudClient] - on(): request
2022-06-18 08:36:32.188 [DEBUG] [io.openhabcloud.internal.CloudClient] - on(): request
2022-06-18 08:36:39.890 [DEBUG] [io.openhabcloud.internal.CloudClient] - on(): cancel
2022-06-18 08:36:40.079 [DEBUG] [io.openhabcloud.internal.CloudClient] - on(): cancel
2022-06-18 08:36:40.080 [DEBUG] [io.openhabcloud.internal.CloudClient] - on(): cancel
2022-06-18 08:37:50.656 [DEBUG] [io.openhabcloud.internal.CloudClient] - on(): request
2022-06-18 08:37:50.744 [DEBUG] [io.openhabcloud.internal.CloudClient] - on(): request
2022-06-18 08:37:54.947 [DEBUG] [io.openhabcloud.internal.CloudClient] - on(): request

It doesn’t seem that your server is receiving or processing the skill requests. This seems to be either a network issue or configuration issue with your cloud connector.

Make sure to go over the troubleshooting guide.