Fail to create primary index using gsi

[Ankit Raj]

Hi Everyone, I am new in couchbase world and i import sample data (beer-sample data) into beer-sample bucket and to write ad-hoc query for that i need primary index and while creating primary index it’s showing me error “GSI CreatePrimaryIndex() - cause: Fails to create index. There is no available index service that can process this request at this time. Index Service can be in bootstrap, recovery, or non-reachable. Please retry the operation at a later time.”. Please help me for solving this issue.

Please find following screenshot for same.

I've attached my logs also. 

Please help me in solving this issue.