18:37:55.291 [error] GenServer #PID<0.191.0> terminating
** (DBConnection.ConnectionError) tcp connect (localhost:5432): connection refused - :econnrefused
    (db_connection) lib/db_connection/connection.ex:148: DBConnection.Connection.connect/2
    (connection) lib/connection.ex:622: Connection.enter_connect/5
    (stdlib) proc_lib.erl:247: :proc_lib.init_p_do_apply/3
Last message: nil
State: Postgrex.Protocol
** (Mix) The database for Hello.Repo couldn't be created: an exception was raised:
    ** (DBConnection.ConnectionError) tcp connect (localhost:5432): connection refused - :econnrefused
        (db_connection) lib/db_connection/connection.ex:148: DBConnection.Connection.connect/2
        (connection) lib/connection.ex:622: Connection.enter_connect/5
        (stdlib) proc_lib.erl:247: :proc_lib.init_p_do_apply/3
but I ran ~/brew services start postgresql
==> Successfully startedpostgresql(label: homebrew.mxcl.postgresql) first ..
So I try
~/locate psql
WARNING: The locate database (/var/db/locate.database) does not exist.
To create the database, run the following command:
  sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.locate.plist
Please be aware that the database can take some time to generate; once
the database has been created, this message will no longer appear.
~/ sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.locate.plist
/System/Library/LaunchDaemons/com.apple.locate.plist: service already loaded
How do I get my database up and running for Phoenix? ```
Error on npm install:
```
~/hello/npm install
module.js:538
    throw err;
    ^
Error: Cannot find module 'semver'
    at Function.Module._resolveFilename (module.js:536:15)
    at Function.Module._load (module.js:466:25)
    at Module.require (module.js:579:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/usr/local/lib/node_modules/npm/lib/utils/unsupported.js:2:14)
    at Module._compile (module.js:635:30)
    at Object.Module._extensions..js (module.js:646:10)
    at Module.load (module.js:554:32)
    at tryModuleLoad (module.js:497:12)
    at Function.Module._load (module.js:489:3)
~/hello/
```
 
    