ERR_SPDY_PROTOCOL_ERROR on Chrome Browser loading .css files

Hi All

I am running Nginx 1.10.0 on Ubuntu 16.04

Since last week I am getting ERR_SPDY_PROTOCOL_ERROR loading 2 .css files from my site and it only occurs on Chrome.

I tested on Firefox and Safari and do not get these errors.

This morning I upgraded Chrome from 58.0.3029.110 > 59.0.3071.86 but still the errors are occurring.

Could this be an Nginx 1.10.0 issue? Should I upgrade to 1.10.3 ?

Nothing has changed in any of my nginx config files at all.

I am running my Nginx sites with "listen *:443 ssl http2;" and not using SPDY at all so why is Chrome doing this ??

I have monitored my Nginx access and error logs for the sites concerned and all assets including the css files that chrome says are not loading are actually being served with a 200 OK response or sometimes a 304 not modified response.

Any help or pointer to solving this will be greatly appreciated.