farzaneh

when run install bundle install i get error below(not exist gemfile.lock):

An error occurred while installing mysql2 (0.4.4), and Bundler cannot continue.
Make sure that gem install mysql2 -v '0.4.4' --source 'https://rubygems.org/' succeeds before bundling.

In Gemfile:
mysql2

when run install bundle install i get error below(exist gemfile.lock):

Your bundle is locked to mimemagic (0.3.2), 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 mimemagic (0.3.2) has removed it. You'll need to update your bundle to a version other than mimemagic (0.3.2) that hasn't been removed in order to
install.

can you help me?