PHP卷发错误：无法获得发行人证书

Question

该错误仅在生产中发生，但在本地环境中效果很好。

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL    , $url                  );
curl_setopt($ch, CURLOPT_HTTPHEADER , array( 'Content-Type: application/json' ) );
curl_setopt($ch, CURLOPT_TIMEOUT            , 60                
curl_setopt($ch, CURLOPT_RETURNTRANSFER     , 1                                         );
curl_setopt($ch, CURLOPT_CUSTOMREQUEST      , 'GET'                 );
curl_setopt($ch, CURLOPT_FOLLOWLOCATION     , TRUE                  );
curl_setopt($ch, CURLOPT_HTTP_VERSION       , CURL_HTTP_VERSION_1_1                     );
curl_setopt($ch, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1);
curl_setopt($ch, CURLOPT_CERTINFO           , true      );
curl_setopt($ch, CURLOPT_VERBOSE            , 1         );
curl_setopt($ch,CURLOPT_SSLCERT,$ssl_cert_path);
curl_setopt($ch,CURLOPT_SSLKEY,$ssl_key_path);

curl_setopt($ch,CURLOPT_CAPATH,$ca_path );
curl_setopt($ch,CURLOPT_CAINFO, $ca_path.$peer_cert );
        
$result = null; $httpCode = null;
$result = curl_exec($ch);
var_dump($result);
curl_close($ch);