[RUBY] PG :: ConnectionBad: could not connect to server: No such file or directory

I got the error PG :: ConnectionBad: could not connect to server: No such file or directory

Solution

1, Go to the front of the desktop in the terminal.

2,

3,

$ cat postgres.log

Then I get the following error

dyld: Library not loaded: /usr/local/opt/icu4c/lib/libicui18n.62.dylib

  Referenced from: /usr/local/bin/postgres

4, Execute by referring to the following articles https://qiita.com/eightfoursix/items/bf11693b085eced95e29

4-1

4-2

In my case, this was the solution.