homebridge-tplink-smarthome: [LB120] Trying to set "color", fails with "No response"

I’ve recently got a LB120. I configured and tried to set the “color” (actually the color temperature) in the Home app. It failed and I got “No response”, and this is what my log says happened:

Oct 08 11:48:38 raspberrypi homebridge[3923]: [2017-10-8 11:48:38] [TP-Link] { ResponseError:  {"err_code":-10000,"err_msg":"Invalid input argument"}
Oct 08 11:48:38 raspberrypi homebridge[3923]: at processResponse (/usr/lib/node_modules/homebridge-hs100/node_modules/hs100-api/lib/device.js:230:11)
Oct 08 11:48:38 raspberrypi homebridge[3923]: at /usr/lib/node_modules/homebridge-hs100/node_modules/hs100-api/lib/device.js:59:21
Oct 08 11:48:38 raspberrypi homebridge[3923]: at Generator.next (<anonymous>)
Oct 08 11:48:38 raspberrypi homebridge[3923]: at step (/usr/lib/node_modules/homebridge-hs100/node_modules/hs100-api/lib/device.js:3:191)
Oct 08 11:48:38 raspberrypi homebridge[3923]: at /usr/lib/node_modules/homebridge-hs100/node_modules/hs100-api/lib/device.js:3:361
Oct 08 11:48:38 raspberrypi homebridge[3923]: at <anonymous>
Oct 08 11:48:38 raspberrypi homebridge[3923]: at process._tickCallback (internal/process/next_tick.js:188:7)
Oct 08 11:48:38 raspberrypi homebridge[3923]: name: 'ResponseError',
Oct 08 11:48:38 raspberrypi homebridge[3923]: response: { err_code: -10000, err_msg: 'Invalid input argument' } }