How to fix this issue? default_gemfile

Hello Guys,

I am facing below issue while install bench init --frappe-branch version-12 frappe-bench.

Traceback (most recent call last):
4: from /usr/bin/bench:6:in <main>' 3: from /usr/lib/ruby/vendor_ruby/bundler.rb:101:in setup’
2: from /usr/lib/ruby/vendor_ruby/bundler.rb:135:in definition' 1: from /usr/lib/ruby/vendor_ruby/bundler.rb:308:in default_gemfile’
/usr/lib/ruby/vendor_ruby/bundler/shared_helpers.rb:34:in `default_gemfile’: Could not locate Gemfile (Bundler::GemfileNotFound)

Please guide me.
Thanks.

Check this Manual bench install error - what's this no Ruby required?

Thanks for replay !!