bad gateway returned from testnet.binancefuture.com/fapi/v1/exchangeInfo

API Futures API
1

I’m getting a bad gateway response from testnet function /exchangeInfo:

502 Bad Gateway

502 Bad Gateway

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!
URL: http://testnet.binancefuture.com/fapi/v1/exchangeInfo?timestamp=1606381297000&recvWindow=1606381397000&signature=d2366020cea8135492a67f85686c0e3a559eef61c1667c0abde4e9f8e53ec0c7
Server: tk_prod_dispatcher_pg
Date: 2020/11/26 09:01:39
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tengine
2

No need of parameters, can be only https://testnet.binancefuture.com/fapi/v1/exchangeInfo