diff --git a/bitrix/php_interface/init.php b/bitrix/php_interface/init.php
index 25c0c29..31f373c 100644
--- a/bitrix/php_interface/init.php
+++ b/bitrix/php_interface/init.php
@@ -224,6 +224,10 @@ function zerof_request($path, $query, $timeout = 900)
 	print "ZEROF response code ".$http_code."\n";
 	if($http_code != 200)
 	{
+		print curl_error($request);
+		print "\n";
+		print "\n";
+
 		print_r($response);
 		print "\n";