当我在终端上运行pry时，出现以下错误。
我已尝试bundle update和gem update pry，但仍然遇到同样的错误。
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:14: warning: already initialized constant Pry::DEFAULT_HOOKS
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:14: warning: previous definition of DEFAULT_HOOKS was here
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:20: warning: already initialized constant Pry::DEFAULT_PRINT
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:20: warning: previous definition of DEFAULT_PRINT was here
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:29: warning: already initialized constant Pry::SIMPLE_PRINT
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:29: warning: previous definition of SIMPLE_PRINT was here
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:38: warning: already initialized constant Pry::CLIPPED_PRINT
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:38: warning: previous definition of CLIPPED_PRINT was here
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:43: warning: already initialized constant Pry::DEFAULT_EXCEPTION_HANDLER
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:43: warning: previous definition of DEFAULT_EXCEPTION_HANDLER was here
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:52: warning: already initialized constant Pry::DEFAULT_PROMPT_NAME
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:52: warning: previous definition of DEFAULT_PROMPT_NAME was here
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:55: warning: already initialized constant Pry::DEFAULT_PROMPT
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:55: warning: previous definition of DEFAULT_PROMPT was here
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:65: warning: already initialized constant Pry::DEFAULT_PROMPT_SAFE_OBJECTS
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:65: warning: previous definition of DEFAULT_PROMPT_SAFE_OBJECTS was here
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry- 0.10.3/lib/pry.rb:68: warning: already initialized constant Pry::SIMPLE_PROMPT
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:68: warning: previous definition of SIMPLE_PROMPT was here
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:70: warning: already initialized constant Pry::NO_PROMPT
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:70: warning: previous definition of NO_PROMPT was here
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:72: warning: already initialized constant Pry::SHELL_PROMPT
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:72: warning: previous definition of SHELL_PROMPT was here
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:79: warning: already initialized constant Pry::NAV_PROMPT
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:79: warning: previous definition of NAV_PROMPT was here
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:94: warning: already initialized constant Pry::DEFAULT_CONTROL_D_HANDLER
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:94: warning: previous definition of DEFAULT_CONTROL_D_HANDLER was here
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:109: warning: already initialized constant Pry::DEFAULT_SYSTEM
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:109: warning: previous definition of DEFAULT_SYSTEM was here
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:117: warning: already initialized constant Pry::INITIAL_PWD
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:117: warning: previous definition of INITIAL_PWD was here
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry/cli.rb:6: warning: already initialized constant Pry::CLI::NoOptionsError
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry/cli.rb:6: warning: previous definition of NoOptionsError was here
/Users/mkv/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems/specification.rb:2112:in `raise_if_conflicts': Unable to activate pry-byebug-1.3.2, because pry-0.10.3 conflicts with pry (~> 0.9.12) (Gem::ConflictError)
from /Users/mkv/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems/specification.rb:1280:in `activate'
from /Users/mkv/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems.rb:198:in `rescue in try_activate'
from /Users/mkv/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems.rb:195:in `try_activate'
from /Users/mkv/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:126:in `rescue in require'
from /Users/mkv/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:39:in `require'
from /Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-byebug-1.3.2/lib/pry-byebug/cli.rb:1:in `<top (required)>'
from /Users/mkv/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from /Users/mkv/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from /Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry/plugins.rb:38:in `load_cli_options'
from /Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry/cli.rb:40:in `block in add_plugin_options'
from /Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry/cli.rb:39:in `each'
from /Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry/cli.rb:39:in `add_plugin_options'
from /Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry/cli.rb:107:in `<top (required)>'
from /Users/mkv/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from /Users/mkv/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from /Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/lib/pry.rb:150:in `<top (required)>'
from /Users/mkv/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from /Users/mkv/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from /Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/bin/pry:12:in `rescue in <top (required)>'
from /Users/mkv/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.3/bin/pry:8:in `<top (required)>'
from /Users/mkv/.rbenv/versions/2.2.2/bin/pry:23:in `load'
from /Users/mkv/.rbenv/versions/2.2.2/bin/pry:23:in `<main>'
我该如何解决这个问题？