ERR_SPDY_PROTOCOL_ERROR Nginx !!

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Hello!

This issue often happens when a cipher is missing in your cipher list and
Chrome tries to use another cipher forbidden in the HTTP/2 spec. Using SSL
Labs would normally display such error (in the "Handshake Simulation" part
of thei results).

And yes, Chrome sucks for displaying an error related to SPDY, even when you
don't have any SPDY and are using HTTP/2.

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,275776,275816#msg-275816