（完成）Jekyll build 报错

报错信息如下：
/opt/rubies/ruby-2.7.3/lib/ruby/2.7.0/bundler/runtime.rb:312:in `check_for_activated_spec!': You have already activated rexml 3.2.3.1, but your Gemfile requires rexml 3.2.5. Since rexml is a default gem, you can either remove your dependency on it or try updating to a newer version of bundler that supports rexml as a default gem. (Gem::LoadError)

检查当前状态

[jekyll@VM_1_5_centos myblog]$ gem list  |grep rexml
rexml (default: 3.2.3.1)

[jekyll@VM_1_5_centos myblog]$ bundle info --path rexml
/home/jekyll/myblog/vendor/bundle/ruby/2.7.0/gems/rexml-3.2.5

尝试卸载失败

[jekyll@VM_1_5_centos myblog]$ gem uninstall rexml
Gem rexml-3.2.3.1 cannot be uninstalled because it is a default gem

修复故障

[root@VM_1_5_centos myblog]# gem install rexml -v 3.2.5
Fetching rexml-3.2.5.gem
Successfully installed rexml-3.2.5
Parsing documentation for rexml-3.2.5
Installing ri documentation for rexml-3.2.5
Done installing documentation for rexml after 1 seconds
1 gem installed
[root@VM_1_5_centos myblog]# gem list |grep rexml
rexml (3.2.5, default: 3.2.3.1)