영카트 결제 에러 채택완료

####인증실패####

array(20) {
  ["resultCode"]=>
  string(4) "V014"
  ["resultMsg"]=>
  string(55) "signkey가 존재하지 않습니다.(키발급 필요)"
  ["returnUrl"]=>
  string(58) "http://www.wintechsns.com/shop/inicis/inistdpay_return.php"
  ["authUrl"]=>
  string(0) ""
  ["charset"]=>
  string(5) "UTF-8"
  ["cardnum"]=>
  string(0) ""
  ["orderNumber"]=>
  string(16) "2019050716585332"
  ["authToken"]=>
  string(0) ""
  ["checkAckUrl"]=>
  string(0) ""
  ["netCancelUrl"]=>
  string(0) ""
  ["mid"]=>
  string(10) "SIRwintech"
  ["merchantData"]=>
  string(0) ""
  ["f33d2ed86bd82d4c22123c9da444d8ab"]=>
  string(16) "MTU1NDE3MDU4OQ=="
  ["96b28b766b7e0699aa91c9ff3d890663"]=>
  string(32) "aHR0cDovL3dpbnRlY2hzbnMuY29tLw=="
  ["d0b04cf96e90eff424e2d661295557fb"]=>
  string(4) "NzA="
  ["6d1166069ec2e1b7efb629430cc0ea9b"]=>
  string(8) "NzAzMA=="
  ["PHPSESSID"]=>
  string(32) "3f43f0ef0836f7a6665b343c3be40e9d"
  ["2a0d2363701f23f8a75028924a3af643"]=>
  string(16) "NjEuNDIuMjAuMTg4"
  ["5b1ceb69146c0bafdc082ff42248da98"]=>
  string(16) "MTU1MzIyMTM3MA=="
  ["wcs_bt"]=>
  string(61) "네이버공통인증키:1557215924|s_4c896debe69c:1556849368"
}

결제 에러가 일어났습니다. 에러 이유는 위와 같습니다.

이렇게 결제시 에러가 뜨는데 어떻게 해야하나요?ㅠㅠ