tilex issues

gistfile1.txt

til_1  | Generated tilex app
til_1  | ** (Mix) The database for Tilex.Repo couldn't be created: an exception was raised:
til_1  |     ** (DBConnection.ConnectionError) tcp connect (localhost:5432): connection refused - :econnrefused
til_1  |         (db_connection) lib/db_connection/connection.ex:163: DBConnection.Connection.connect/2
til_1  |         (connection) lib/connection.ex:622: Connection.enter_connect/5
til_1  |         (stdlib) proc_lib.erl:247: :proc_lib.init_p_do_apply/3
til_1  |
til_1  | 03:47:45.784 [error] GenServer #PID<0.7076.0> terminating
til_1  | ** (DBConnection.ConnectionError) tcp connect (localhost:5432): connection refused - :econnrefused
til_1  |     (db_connection) lib/db_connection/connection.ex:163: DBConnection.Connection.connect/2
til_1  |     (connection) lib/connection.ex:622: Connection.enter_connect/5
til_1  |     (stdlib) proc_lib.erl:247: :proc_lib.init_p_do_apply/3
til_1  | Last message: nil
til_1  | State: Postgrex.Protocol

now this

til_1  | Generated tilex app
db_1   | 2018-10-31 03:59:51.591 UTC [57] LOG:  incomplete startup packet
til_1  | ** (Mix) The database for Tilex.Repo couldn't be created: an exception was raised:
til_1  |     ** (RuntimeError) Connect raised a KeyError error. The exception details are hidden, as
til_1  | they may contain sensitive data such as database credentials.
til_1  |
til_1  |         (elixir) lib/keyword.ex:377: Keyword.fetch!/2
til_1  |         (postgrex) lib/postgrex/protocol.ex:577: Postgrex.Protocol.startup/2
til_1  |         (postgrex) lib/postgrex/protocol.ex:504: Postgrex.Protocol.handshake/2
til_1  |         (db_connection) lib/db_connection/connection.ex:135: DBConnection.Connection.connect/2
til_1  |         (connection) lib/connection.ex:622: Connection.enter_connect/5
til_1  |         (stdlib) proc_lib.erl:247: :proc_lib.init_p_do_apply/3
til_1  |
til_1  | 03:59:51.627 [error] GenServer #PID<0.7076.0> terminating
til_1  | ** (RuntimeError) Connect raised a KeyError error. The exception details are hidden, as
til_1  | they may contain sensitive data such as database credentials.
til_1  |
til_1  |     (elixir) lib/keyword.ex:377: Keyword.fetch!/2
til_1  |     (postgrex) lib/postgrex/protocol.ex:577: Postgrex.Protocol.startup/2
til_1  |     (postgrex) lib/postgrex/protocol.ex:504: Postgrex.Protocol.handshake/2
til_1  |     (db_connection) lib/db_connection/connection.ex:135: DBConnection.Connection.connect/2
til_1  |     (connection) lib/connection.ex:622: Connection.enter_connect/5
til_1  |     (stdlib) proc_lib.erl:247: :proc_lib.init_p_do_apply/3
til_1  | Last message: nil
til_1  | State: Postgrex.Protocol