Bundler Gem not Found Error

gistfile1.txt

If you get this strange error:

Your bundle is locked to some_gem (0.10.1), but that version could not be found in any of the sources listed in your Gemfile. If you haven't changed sources, that means the author of some_gem
(0.10.1) has removed it. You'll need to update your bundle to a version other than some_gem (0.10.1) that hasn't been removed in order to install.

and running `ruby -ropen-uri -e 'eval open("https://git.io/vQhWq").read'` ends with no errors:

Check your time settings on your server/machine!

https://bundler.io/v1.17/guides/rubygems_tls_ssl_troubleshooting_guide.html

If your time is in the past, you cannot connect to rubygems.org.

For Ubuntu 18.04 (Server):

sudo apt install ntpdate
sudo ntpdate ntp.ubuntu.com

😓