求助大神, gitlab重启出错. 登陆出现502警告. 错误打印如下.

==> /var/log/gitlab/unicorn/state <====> /var/log/gitlab/unicorn/unicorn_stdout.log <==
bundler: failed to load command: unicorn (/opt/gitlab/embedded/bin/unicorn)==> /var/log/gitlab/unicorn/unicorn_stderr.log <==
LoadError: /opt/gitlab/embedded/lib/libre2.so.0: symbol _ZTVNSt7__cxx1119basic_ostringstreamIcSt11char_traitsIcESaIcEEE, version GLIBCXX_3.4.21 not defined in file libstdc++.so.6 with link time reference - /opt/gitlab/embedded/lib/ruby/gems/2.4.0/gems/re2-1.1.1/lib/re2.so
  /opt/gitlab/embedded/lib/ruby/gems/2.4.0/gems/activesupport-4.2.10/lib/active_support/dependencies.rb:274:in `require'
  /opt/gitlab/embedded/lib/ruby/gems/2.4.0/gems/activesupport-4.2.10/lib/active_support/dependencies.rb:274:in `block in require'
  /opt/gitlab/embedded/lib/ruby/gems/2.4.0/gems/activesupport-4.2.10/lib/active_support/dependencies.rb:240:in `load_dependency'
  /opt/gitlab/embedded/lib/ruby/gems/2.4.0/gems/activesupport-4.2.10/lib/active_support/dependencies.rb:274:in `require'
  /opt/gitlab/embedded/lib/ruby/gems/2.4.0/gems/re2-1.1.1/lib/re2.rb:6:in `<top (required)>'
  /opt/gitlab/embedded/lib/ruby/gems/2.4.0/gems/bundler-1.16.2/lib/bundler/runtime.rb:81:in `require'
  /opt/gitlab/embedded/lib/ruby/gems/2.4.0/gems/bundler-1.16.2/lib/bundler/runtime.rb:81:in `block (2 levels) in require'
  /opt/gitlab/embedded/lib/ruby/gems/2.4.0/gems/bundler-1.16.2/lib/bundler/runtime.rb:76:in `each'
  /opt/gitlab/embedded/lib/ruby/gems/2.4.0/gems/bundler-1.16.2/lib/bundler/runtime.rb:76:in `block in require'
  /opt/gitlab/embedded/lib/ruby/gems/2.4.0/gems/bundler-1.16.2/lib/bundler/runtime.rb:65:in `each'
  /opt/gitlab/embedded/lib/ruby/gems/2.4.0/gems/bundler-1.16.2/lib/bundler/runtime.rb:65:in `require'
  /opt/gitlab/embedded/lib/ruby/gems/2.4.0/gems/bundler-1.16.2/lib/bundler.rb:114:in `require'
  /opt/gitlab/embedded/service/gitlab-rails/config/application.rb:5:in `<top (required)>'
  /opt/gitlab/embedded/service/gitlab-rails/config/environment.rb:7:in `require'
  /opt/gitlab/embedded/service/gitlab-rails/config/environment.rb:7:in `<top (required)>'
  /opt/gitlab/embedded/service/gitlab-rails/config.ru:19:in `require'
  /opt/gitlab/embedded/service/gitlab-rails/config.ru:19:in `block in <main>'
  /opt/gitlab/embedded/lib/ruby/gems/2.4.0/gems/rack-1.6.10/lib/rack/builder.rb:55:in `instance_eval'
  /opt/gitlab/embedded/lib/ruby/gems/2.4.0/gems/rack-1.6.10/lib/rack/builder.rb:55:in `initialize'
  /opt/gitlab/embedded/service/gitlab-rails/config.ru:1:in `new'
  /opt/gitlab/embedded/service/gitlab-rails/config.ru:1:in `<main>'
  /opt/gitlab/embedded/lib/ruby/gems/2.4.0/gems/unicorn-5.1.0/lib/unicorn.rb:56:in `eval'
  /opt/gitlab/embedded/lib/ruby/gems/2.4.0/gems/unicorn-5.1.0/lib/unicorn.rb:56:in `block in builder'
  /opt/gitlab/embedded/lib/ruby/gems/2.4.0/gems/unicorn-5.1.0/lib/unicorn/http_server.rb:752:in `build_app!'
  /opt/gitlab/embedded/lib/ruby/gems/2.4.0/gems/unicorn-5.1.0/lib/unicorn/http_server.rb:129:in `start'
  /opt/gitlab/embedded/lib/ruby/gems/2.4.0/gems/unicorn-5.1.0/bin/unicorn:126:in `<top (required)>'
  /opt/gitlab/embedded/bin/unicorn:23:in `load'
  /opt/gitlab/embedded/bin/unicorn:23:in `<top (required)>'==> /var/log/gitlab/unicorn/current <==
2019-03-21_10:53:49.07609 master failed to start, check stderr log for details
2019-03-21_10:53:50.08004 failed to start a new unicorn master
2019-03-21_10:53:50.10391 starting new unicorn master