puma-dev无法启动并失败并出现以下错误：
unexpected exit:
bash: line 23: exec: puma: not found
puma-dev没有看到我安装了pumagem。它似乎被多个 ruby 版本抛弃了。我有 a.ruby-version和 a.ruby-gemset所以我不确定为什么它在错误的 ruby 文件夹中查找pumagem？
顺便说一句，我没有以下任何文件：~/.powconfig. env. powrc .powenv.
$ puma-dev
* Directory for apps: /Users/tom/.puma-dev
* Domains: test
* DNS Server port: 9253
* HTTP Server port: 9280
* HTTPS Server port: 9283
! Puma dev listening on http and https
! Booting app 'my_app' on socket /Users/tom/.puma-dev/my_app/tmp/puma-dev-5052.sock
my_app[5056]: bash: no job control in this shell
my_app[5056]: /Users/tom/.rvm/rubies/ruby-2.3.3/lib/ruby/site_ruby/2.3.0/rubygems.rb:289:in `find_spec_for_exe': can't find gem puma (>= 0.a) with executable puma (Gem::GemNotFoundException)
my_app[5056]: from /Users/tom/.rvm/rubies/ruby-2.3.3/lib/ruby/site_ruby/2.3.0/rubygems.rb:308:in `activate_bin_path'
my_app[5056]: from /Users/tom/.rvm/gems/ruby-2.5.3@my_app/bin/puma:23:in `<main>'
my_app[5056]: from /Users/tom/.rvm/gems/ruby-2.3.3@global/bin/ruby_executable_hooks:24:in `eval'
my_app[5056]: from /Users/tom/.rvm/gems/ruby-2.3.3@global/bin/ruby_executable_hooks:24:in `<main>'
! Killing 'my_app' (5056)
* App 'my_app' shutdown and cleaned up
! Detecting app 'my_app' dying on start
$ cat .ruby-version
ruby-2.5.3
$ cat .ruby-gemset
my_app
$ which puma
../.rvm/gems/ruby-2.5.3@my_app/bin/puma