VeSync issues after update to 2021.4

My VeSync devices stopped working after the update to 2021.4. I’m fairly certain they were working yesterday which is why I suspect the update. When I attempt to switch a device on or off, I get this error:

Failed to call service switch/turn_on.  Expecting value: line 1 column 1 (char 0)

I’ve checked my other non-VeSync plugs and switches (zwave and zigbee) and they seem to be working fine. I also tried the configuration’s “Reload” option without any change to the behavior. Any ideas before I remove the integration and try re-installing it?

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Look here: https://github.com/home-assistant/core/issues to see if some else already reported this. If not, create an issue yourself.

Did you ever find an answer? As added a new device and it doesn’t show up in the integration.