502 Bad gatway : Chunk must be last transfer encoding

Hi ,

We are getting 502 Bad gatway : Chunk must be last transfer encoding while connecting to backend .Streaming is not enabled and there is not other layer which doing any transformation .

Could anyone please insight on this issue . I found a old post but no resolution is mentioned .

chunked MUST be the last transfer-coding applied t… - Google Cloud Community

Best Regards,

Patty