2021-11-28 4:01:04[1638072064.3147] - new sell order: Array
(
    [contract] => DOT_USDT
    [price] => 33.137
    [size] => -0
    [tif] => gtc
)
 Array
(
    [label] => INVALID_ARGUMENT
    [detail] => invalid size
)

2021-11-28 21:01:03[1638133263.5246] - new sell order: Array
(
    [contract] => DOT_USDT
    [price] => 33.7706
    [size] => -0
    [tif] => gtc
)
 Array
(
    [label] => INVALID_ARGUMENT
    [detail] => invalid size
)