Rails 5.1.1 not generating scaffold / controller etc - ruby-on-rails

Question

Updated local installation of rails from 5.0.1 to 5.1.1. last night. I'm now failing to get any generation to work i.e. rails g scaffold Product or rails generate controller Welcome. The terminal doesn't respond at all. I have to ctrl-c to break out of it. I then get the following:
^C/Users/Simon/.rvm/gems/ruby-2.4.0/gems/spring-2.0.2/lib/spring/client/run.rb:117:in `gets': Interrupt
from /Users/Simon/.rvm/gems/ruby-2.4.0/gems/spring-2.0.2/lib/spring/client/run.rb:117:in `verify_server_version'
from /Users/Simon/.rvm/gems/ruby-2.4.0/gems/spring-2.0.2/lib/spring/client/run.rb:62:in `run'
from /Users/Simon/.rvm/gems/ruby-2.4.0/gems/spring-2.0.2/lib/spring/client/run.rb:42:in `warm_run'
from /Users/Simon/.rvm/gems/ruby-2.4.0/gems/spring-2.0.2/lib/spring/client/run.rb:35:in `call'
from /Users/Simon/.rvm/gems/ruby-2.4.0/gems/spring-2.0.2/lib/spring/client/command.rb:7:in `call'
from /Users/Simon/.rvm/gems/ruby-2.4.0/gems/spring-2.0.2/lib/spring/client/rails.rb:24:in `call'
from /Users/Simon/.rvm/gems/ruby-2.4.0/gems/spring-2.0.2/lib/spring/client/command.rb:7:in `call'
from /Users/Simon/.rvm/gems/ruby-2.4.0/gems/spring-2.0.2/lib/spring/client.rb:30:in `run'
from /Users/Simon/.rvm/gems/ruby-2.4.0/gems/spring-2.0.2/bin/spring:49:in `<top (required)>'
from /Users/Simon/.rvm/gems/ruby-2.4.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `load'
from /Users/Simon/.rvm/gems/ruby-2.4.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `<top (required)>'
from /Users/Simon/Sites/depot/bin/spring:15:in `require'
from /Users/Simon/Sites/depot/bin/spring:15:in `<top (required)>'
from bin/rails:3:in `load'
from bin/rails:3:in `<main>'
Should I be suspecting the spring gem here?
I have run bundle update.
And also:
$ bundle exec spring binstub --all
* bin/rake: spring already present
* bin/rails: spring already present
My gemfile.lock:
GEM
remote: https://rubygems.org/
specs:
actioncable (5.1.1)
actionpack (= 5.1.1)
nio4r (~> 2.0)
websocket-driver (~> 0.6.1)
actionmailer (5.1.1)
actionpack (= 5.1.1)
actionview (= 5.1.1)
activejob (= 5.1.1)
mail (~> 2.5, >= 2.5.4)
rails-dom-testing (~> 2.0)
actionpack (5.1.1)
actionview (= 5.1.1)
activesupport (= 5.1.1)
rack (~> 2.0)
rack-test (~> 0.6.3)
rails-dom-testing (~> 2.0)
rails-html-sanitizer (~> 1.0, >= 1.0.2)
actionview (5.1.1)
activesupport (= 5.1.1)
builder (~> 3.1)
erubi (~> 1.4)
rails-dom-testing (~> 2.0)
rails-html-sanitizer (~> 1.0, >= 1.0.3)
activejob (5.1.1)
activesupport (= 5.1.1)
globalid (>= 0.3.6)
activemodel (5.1.1)
activesupport (= 5.1.1)
activerecord (5.1.1)
activemodel (= 5.1.1)
activesupport (= 5.1.1)
arel (~> 8.0)
activesupport (5.1.1)
concurrent-ruby (~> 1.0, >= 1.0.2)
i18n (~> 0.7)
minitest (~> 5.1)
tzinfo (~> 1.1)
addressable (2.5.1)
public_suffix (~> 2.0, >= 2.0.2)
arel (8.0.0)
bindex (0.5.0)
builder (3.2.3)
byebug (9.0.6)
capybara (2.14.0)
addressable
mime-types (>= 1.16)
nokogiri (>= 1.3.3)
rack (>= 1.0.0)
rack-test (>= 0.5.4)
xpath (~> 2.0)
childprocess (0.7.0)
ffi (~> 1.0, >= 1.0.11)
coffee-rails (4.2.2)
coffee-script (>= 2.2.0)
railties (>= 4.0.0)
coffee-script (2.4.1)
coffee-script-source
execjs
coffee-script-source (1.12.2)
concurrent-ruby (1.0.5)
erubi (1.6.0)
execjs (2.7.0)
ffi (1.9.18)
globalid (0.4.0)
activesupport (>= 4.2.0)
i18n (0.8.1)
jbuilder (2.6.4)
activesupport (>= 3.0.0)
multi_json (>= 1.2)
listen (3.1.5)
rb-fsevent (~> 0.9, >= 0.9.4)
rb-inotify (~> 0.9, >= 0.9.7)
ruby_dep (~> 1.2)
loofah (2.0.3)
nokogiri (>= 1.5.9)
mail (2.6.5)
mime-types (>= 1.16, < 4)
method_source (0.8.2)
mime-types (3.1)
mime-types-data (~> 3.2015)
mime-types-data (3.2016.0521)
mini_portile2 (2.1.0)
minitest (5.10.2)
multi_json (1.12.1)
nio4r (2.0.0)
nokogiri (1.7.2)
mini_portile2 (~> 2.1.0)
public_suffix (2.0.5)
puma (3.8.2)
rack (2.0.3)
rack-test (0.6.3)
rack (>= 1.0)
rails (5.1.1)
actioncable (= 5.1.1)
actionmailer (= 5.1.1)
actionpack (= 5.1.1)
actionview (= 5.1.1)
activejob (= 5.1.1)
activemodel (= 5.1.1)
activerecord (= 5.1.1)
activesupport (= 5.1.1)
bundler (>= 1.3.0, < 2.0)
railties (= 5.1.1)
sprockets-rails (>= 2.0.0)
rails-dom-testing (2.0.3)
activesupport (>= 4.2.0)
nokogiri (>= 1.6)
rails-html-sanitizer (1.0.3)
loofah (~> 2.0)
railties (5.1.1)
actionpack (= 5.1.1)
activesupport (= 5.1.1)
method_source
rake (>= 0.8.7)
thor (>= 0.18.1, < 2.0)
rake (12.0.0)
rb-fsevent (0.9.8)
rb-inotify (0.9.8)
ffi (>= 0.5.0)
ruby_dep (1.5.0)
rubyzip (1.2.1)
sass (3.4.24)
sass-rails (5.0.6)
railties (>= 4.0.0, < 6)
sass (~> 3.1)
sprockets (>= 2.8, < 4.0)
sprockets-rails (>= 2.0, < 4.0)
tilt (>= 1.1, < 3)
selenium-webdriver (3.4.0)
childprocess (~> 0.5)
rubyzip (~> 1.0)
websocket (~> 1.0)
spring (2.0.2)
activesupport (>= 4.2)
spring-watcher-listen (2.0.1)
listen (>= 2.7, < 4.0)
spring (>= 1.2, < 3.0)
sprockets (3.7.1)
concurrent-ruby (~> 1.0)
rack (> 1, < 3)
sprockets-rails (3.2.0)
actionpack (>= 4.0)
activesupport (>= 4.0)
sprockets (>= 3.0.0)
sqlite3 (1.3.13)
thor (0.19.4)
thread_safe (0.3.6)
tilt (2.0.7)
turbolinks (5.0.1)
turbolinks-source (~> 5)
turbolinks-source (5.0.3)
tzinfo (1.2.3)
thread_safe (~> 0.1)
uglifier (3.2.0)
execjs (>= 0.3.0, < 3)
web-console (3.5.1)
actionview (>= 5.0)
activemodel (>= 5.0)
bindex (>= 0.4.0)
railties (>= 5.0)
websocket (1.2.4)
websocket-driver (0.6.5)
websocket-extensions (>= 0.1.0)
websocket-extensions (0.1.2)
xpath (2.0.0)
nokogiri (~> 1.3)
PLATFORMS
ruby
DEPENDENCIES
byebug
capybara (~> 2.13)
coffee-rails (~> 4.2)
jbuilder (~> 2.5)
listen (>= 3.0.5, < 3.2)
puma (~> 3.7)
rails (~> 5.1.1)
sass-rails (~> 5.0)
selenium-webdriver
spring
spring-watcher-listen (~> 2.0.0)
sqlite3
turbolinks (~> 5)
tzinfo-data
uglifier (>= 1.3.0)
web-console (>= 3.3.0)
BUNDLED WITH
1.14.6

Answer 1

Try updating the bin from the rake task available.
rake app:update:bin
OR …if on a later version of rails…
rake rails:update:bin

Answer 2

Maybe You need reinstall node and yarn again.
For Mac
$brew install node
$brew install yarn
$rails new myproject --skip-turbolinks --webpack=vue --database=postgresql