Is anyone getting this error since update to 5.3.5

whenever i try to accept an order this is the error i get

Order Accept Encountered Problems
Received HTTP response code (); Array ( [wrapper_data] => Array ( [headers] => Array ( ) [readbuf] => Resource id #47 ) [wrapper_type] => cURL [stream_type] => cURL [mode] => rb [unread_bytes] => 0 [seekable] => [uri] => http://myserverinfo:2199/api.php [timed_out] => [blocked] => 1 [eof] => )

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can somone please help