[ngx_pagespeed 1.13.35.2-0] (connecting to:localhost):0:serf_context_run error

Code: [Select]

[ngx_pagespeed 1.13.35.2-0] http://propertymysore.com/company/propertymysore.com/img/listing/55/55.webp (connecting to:localhost):0:serf_context_run error status=111 (Connection refused)
I get the above error when I try to open my web page at https://propertymysore.com/listing/55/5-Acres-commercial-converted-land/

Can someone throw some light on the possible issues?