agilecrm curl call返回bool（false）

i am using php and getting null false response when push post curl call request to agilecrm url with i have project on two domain it is working fine on one domain but at other domain agile is returning null to me i dont know why this is happening please help me about this below is my array which i am posting to agile

Array
(
    [lead_score] => 
    [star_value] => 
    [tags] => Array
        (
            [0] => Teacher
        )

    [properties] => Array
        (
            [0] => Array
                (
                    [name] => first_name
                    [value] => Tertulia
                    [type] => SYSTEM
                )

            [1] => Array
                (
                    [name] => last_name
                    [value] => Dorada
                    [type] => SYSTEM
                )

            [2] => Array
                (
                    [name] => email
                    [value] => tertudo19@gmail.com
                    [type] => SYSTEM
                )

            [3] => Array
                (
                    [name] => title
                    [value] => 
                    [type] => SYSTEM
                )

            [4] => Array
                (
                    [name] => address
                    [value] => 
                    [type] => SYSTEM
                )

            [5] => Array
                (
                    [name] => phone
                    [value] => 
                    [type] => SYSTEM
                )

            [6] => Array
                (
                    [name] => TeamNumbers
                    [value] => 
                    [type] => CUSTOM
                )

            [7] => Array
                (
                    [name] => Date Of Joining
                    [value] => 1542369966
                    [type] => CUSTOM
                )

        )

)