Connectig to postgres to store users and dashboards

Hi,

When I’m trying to start grafana with postgres configuration I’m getting not so clear for me error. This happens with fresh installation. Perhaps someone have any idea what hapeens?

t=2018-12-16T16:13:32+0000 lvl=info msg="App mode production" logger=settings
t=2018-12-16T16:13:32+0000 lvl=info msg="Initializing HTTPServer" logger=server
t=2018-12-16T16:13:32+0000 lvl=info msg="Initializing SqlStore" logger=server
t=2018-12-16T16:13:32+0000 lvl=info msg="Connecting to DB" logger=sqlstore dbtype=postgres
t=2018-12-16T16:13:32+0000 lvl=info msg="Starting DB migration" logger=migrator
t=2018-12-16T16:13:32+0000 lvl=info msg="Executing migration" logger=migrator id="drop index UQE_user_login - v1"
t=2018-12-16T16:13:32+0000 lvl=eror msg="Executing migration failed" logger=migrator id="drop index UQE_user_login - v1" error="pq: index \"UQE_user_login\" is in use as unique constraint (use CASCADE if you really want to drop it)"
t=2018-12-16T16:13:32+0000 lvl=eror msg="Exec failed" logger=migrator error="pq: index \"UQE_user_login\" is in use as unique constraint (use CASCADE if you really want to drop it)" sql="DROP INDEX \"UQE_user_login\""
t=2018-12-16T16:13:32+0000 lvl=eror msg="Server shutdown" logger=server reason="Service init failed: Migration failed err: pq: index \"UQE_user_login\" is in use as unique constraint (use CASCADE if you really want to drop it)"

Cheers,
Flybro