I tried following the advice here (restarting the terminal) -- Rails keeps telling me that it's not currently installed, but this doesn't seem to work. Basically in my Rails project I can't start it (or even check the version) because it keeps telling me a gem can't be found.
rails -v
...
Ignoring sqlite3-1.3.13 because its extensions are not built. Try: gem pristine sqlite3 --version 1.3.13
Ignoring websocket-driver-0.6.5 because its extensions are not built. Try: gem pristine websocket-driver --version 0.6.5
Ignoring websocket-native-1.0.0 because its extensions are not built. Try: gem pristine websocket-native --version 1.0.0
Could not find nokogiri-1.10.4 in any of the sources
Run `bundle install` to install missing gems.
Then I run
bundle install
...
Using spring 2.1.0
Using spring-watcher-listen 2.0.1
Bundle complete! 10 Gemfile dependencies, 50 gems now installed.
Use `bundle info [gemname]` to see where a bundled gem is installed.
But after restarting the terminal, running "rails -v" still results in the same error. What to do?