Mender rootfs artifact deploy not starting

[tirankas]

Hi Guys,
Trying to setup the server side for mender.
Have been able to make it work, server version 2.7.0, device is shown on the server and inventory looks good.
However, when putting a release and deploying to device, it is pending forever, waiting for device.
From the device side I see the following in the logs:

Jun 3 08:22:42 jetson-nano-emmc-cot user.info mender[729693]: time="2021-06-03T08:22:42+03:00" level=info msg="State transition: check-wait [Idle] -> update-check [Sync]" func=github.com/mendersoftware/mender/app.transitionState file="/home/tirank/GIT/nvidia_1.0.5_new/tegra-l4t/bu
Jun 3 08:22:42 jetson-nano-emmc-cot user.warn mender[729693]: time="2021-06-03T08:22:42+03:00" level=warning msg="Client received invalid response status code: 503" func=github.com/mendersoftware/mender/client.processUpdateResponse file="/home/tirank/GIT/nvidia_1.0.5_new/tegra-l4t
Jun 3 08:22:42 jetson-nano-emmc-cot user.err mender[729693]: time="2021-06-03T08:22:42+03:00" level=error msg="Error receiving scheduled update data: (request_id: ): Invalid response received from server server error message: failed to parse server response: json: cannot unmarsha
Jun 3 08:22:42 jetson-nano-emmc-cot user.err mender[729693]: time="2021-06-03T08:22:42+03:00" level=error msg="Update check failed: transient error: (request_id: ): Invalid response received from server server error message: failed to parse server response: json: cannot unmarshal
Jun 3 08:22:42 jetson-nano-emmc-cot user.info mender[729693]: time="2021-06-03T08:22:42+03:00" level=info msg="State transition: update-check [Sync] -> error [Error]" func=github.com/mendersoftware/mender/app.transitionState file="/home/tirank/GIT/nvidia_1.0.5_new/tegra-l4t/build-
Jun 3 08:22:42 jetson-nano-emmc-cot user.info mender[729693]: time="2021-06-03T08:22:42+03:00" level=info msg="Handling error state, current error: transient error: (request_id: ): Invalid response received from server server error message: failed to parse server response: json: c
Jun 3 08:22:42 jetson-nano-emmc-cot user.info mender[729693]: time="2021-06-03T08:22:42+03:00" level=info msg="State transition: error [Error] -> idle [Idle]" func=github.com/mendersoftware/mender/app.transitionState file="/home/tirank/GIT/nvidia_1.0.5_new/tegra-l4t/build-nano-emm
Jun 3 08:22:42 jetson-nano-emmc-cot user.info mender[729693]: time="2021-06-03T08:22:42+03:00" level=info msg="State transition: idle [Idle] -> check-wait [Idle]" func=github.com/mendersoftware/mender/app.transitionState file="/home/tirank/GIT/nvidia_1.0.5_new/tegra-l4t/build-nano

On the device side, mender client version is 2.6.0 (couldnt find a client version 2.7.0 and dont know the client to server compatibility matrix).

Anyone seen this error?

Thanks