HelloBlockchain error

[arruah]

Hi, i got this error when I try start phoenix:
[error] #PID<0.597.0> running HelloBlockchainWeb.Endpoint terminated Server: localhost:4000 (http) Request: GET / ** (exit) an exception was raised: ** (RuntimeError) expected action/2 to return a Plug.Conn, all plugs must receive a connection (conn) and return a connection (hello_blockchain 0.0.1) lib/hello_blockchain_web/controllers/page_controller.ex:1: HelloBlockchainWeb.PageController.phoenix_controller_pipeline/2 (hello_blockchain 0.0.1) lib/hello_blockchain_web/endpoint.ex:1: HelloBlockchainWeb.Endpoint.instrument/4 (phoenix 1.3.0) lib/phoenix/router.ex:278: Phoenix.Router.__call__/1 (hello_blockchain 0.0.1) lib/hello_blockchain_web/endpoint.ex:1: HelloBlockchainWeb.Endpoint.plug_builder_call/2 (hello_blockchain 0.0.1) lib/plug/debugger.ex:99: HelloBlockchainWeb.Endpoint."call (overridable 3)"/2 (hello_blockchain 0.0.1) lib/hello_blockchain_web/endpoint.ex:1: HelloBlockchainWeb.Endpoint.call/2 (plug 1.4.3) lib/plug/adapters/cowboy/handler.ex:15: Plug.Adapters.Cowboy.Handler.upgrade/4 (cowboy 1.1.2) /home/kamren/work/elixir/hello_blockchain/deps/cowboy/src/cowboy_protocol.erl:442: :cowboy_protocol.execute/4 [error] exited in: GenServer.call(:phoenix_live_reload_file_monitor, :subscribe, 5000) ** (EXIT) no process: the process is not alive or there's no process currently associated with the given name, possibly because its application isn't started