It prints nothing

[vannak62]

Hi Sir! i know this is from a long time ago. I just hoping to find a printing solution for my project.
i came across our library and i have tried it.

It seems i got no error but the printer prints nothing. Here is the debug result:
Array
(
[0] => Array
(
[message] => Connecting... Host: 114.134.184.171, Port: 515
[time] => 1569731665
[type] => message
)

[1] => Array
    (
        [message] => Print any waiting job...
        [time] => 1569731665
        [type] => message
    )

[2] => Array
    (
        [message] => Connecting... Host: 114.134.184.171, Port: 515
        [time] => 1569731665
        [type] => message
    )

[3] => Array
    (
        [message] => Starting printer...
        [time] => 1569731665
        [type] => message
    )

[4] => Array
    (
        [message] => Setting cfA control String
        [time] => 1569731665
        [type] => message
    )

[5] => Array
    (
        [message] => Sending control file...
        [time] => 1569731665
        [type] => message
    )

[6] => Array
    (
        [message] => Sending data...
        [time] => 1569731725
        [type] => message
    )

[7] => Array
    (
        [message] => Data received!!!
        [time] => 1569731725
        [type] => message
    )

)