Advanced cbq:go_cbq throwing connection error for 8091

Able to do select * from simple_table1 limit 10 from cbq;

while go_cbq on same machine gives:
./go_cbq
queryRestAPI, baseURL: http://localhost:8091/, schema http, path: /pools
queryRestAPI, baseURL: http://localhost:8091/, schema http, path: /pools/default/nodeServices
ERROR 100 : Unable to connect to http://localhost:8091/.

No Input Credentials. In order to connect to a server with authentication, please provide credentials.
go_cbq> select * from simple_table limit 10;
ERROR 108 : Unspecified error.

Able to connect to 8093 port and issue the queries.