2022-01-05 1:01:02[1641344462.4657] - new sell order: Array
(
    [contract] => DOT_USDT
    [price] => 28.9834
    [size] => -0
    [tif] => gtc
)
 Array
(
    [label] => INVALID_ARGUMENT
    [detail] => invalid size
)

2022-01-05 20:01:03[1641412863.6961] - new sell order: Array
(
    [contract] => DOT_USDT
    [price] => 27.9654
    [size] => -0
    [tif] => gtc
)
 Array
(
    [label] => INVALID_ARGUMENT
    [detail] => invalid size
)