Couchbase operator 1.2 flush bucket failing

Hi, i am using couchbase operator 1.2
I created new coucbbase cluster,. Deploying of MS finished fine and created all needed buckets and indexes,but when i am trying to flush bucket, it failing via gui and curl as well

error from gui -

504 Gateway Time-out

The server didn’t respond in time.
Flushing “” failed with error:
ns_orchestrator 000

Error from cli -

Accept: /

  • HTTP 1.0, assume close after body
    < HTTP/1.0 504 Gateway Time-out
    < Cache-Control: no-cache
    < Connection: close
    < Content-Type: text/html

504 Gateway Time-out

The server didn't respond in time. * Closing connection 0