Someone who has experienced Master Payment card gateway service could help me with this error
} 
My settings are as follows
/ possible values: // FALSE = disable verification // TRUE = enable verification $ configArray ["certificateVerifyPeer"] = TRUE;
// possible values: // 0 = do not check / verify hostname // 1 = check for existence of hostname in certificate // 2 = verify request hostname matches certificate hostname $ configArray ["certificateVerifyHost"] = 2;
// URL base of the Payment Gateway. Do not include the version. $ configArray ["gatewayUrl"]=" link ";
// Merchant ID supplied by your payments provider $ configArray ["merchantId"]="TESTxxxx";
// API username in the format below where Merchant ID is the same as above $ configArray ["apiUsername"]="merchant.TESTxxxxx";
// API password which can be configured in Merchant Administration $ configArray ["password"]="78fdxxxxxxxxxxxxxxxxx";
// The debug setting controls displaying the raw content of the request and // response for a transaction. // In production you should ensure this is set to FALSE as to not display / use // this debugging information $ configArray ["debug"] = FALSE;
// Version number of the API being used for your integration // this is the default value if it is not being specified in process.php $ configArray ["version"]="34";