error - NullPointerException (DeviceManager:427

With watch protocol, I know the first warning is because there is no GPS reported, but the second error is weird one (NullPointerException (DeviceManager:427 < *:416 < FuelDropEventHandler:50 < BaseEventHandler:29 < ...) ), with this error cannot get the location of the device, and the whole bellow log is appearing every 5 minutes.

2022-01-19 09:10:24  INFO: [1a475c34] connected
2022-01-19 09:10:24  INFO: [1a475c34: watch < 171.73.212.92] HEX: 5b33472a383830393033323636392a303030392a4c4b2c302c302c37365d
2022-01-19 09:10:24  INFO: [1a475c34: watch > 171.73.212.92] HEX: 5b33472a383830393033323636392a303030322a4c4b5d
2022-01-19 09:10:24  WARN: Failed to store position - Data truncation: Incorrect datetime value: '1970-01-01 00:00:00' for column 'fixtime' at row 1 - MysqlDataTruncation (... < QueryBuilder:446 < DataManager:429 < DefaultDataHandler:40 < ...)
2022-01-19 09:10:24  WARN: [1a475c34] error - NullPointerException (DeviceManager:427 < *:416 < FuelDropEventHandler:50 < BaseEventHandler:29 < ...)
2022-01-19 09:10:24  INFO: [1a475c34] disconnected

Any possible reason for it?

Maybe attributes field is null?

Yeah the field is null, I will try to add something to it and will share the result.

I am confirming that adding an attribute to the device solved the issue.

Thanks @Anton for your help!