OGR FDW only works with UTF-8 databases, postgis install

Question

I try to add postgis extension on postgresql95. I use centos7

I follow this link to install postgis: http://www.postgresonline.com/journal/archives/362-An-almost-idiots-guide-to-install-PostgreSQL-9.5,-PostGIS-2.2-and-pgRouting-2.1.0-with-Yum.html#PostGIS

I have done with install

CREATE EXTENSION postgis;
CREATE EXTENSION postgis_topology;    

But when i execute this

CREATE EXTENSION ogr_fdw;

I get error like this

OGR FDW only works with UTF-8 databases

How to fix it?