Could not find ‘json‘ (＞= 1.5.1) among 45 total gem(s)_could not find json-2.6.3 in locally installed gem

通过rvm包管理器,目前安装的ruby版本如下:

➜  ~ rvm list
   ext-ruby-2.6.8_macos [ universal ]
   ruby-2.6.6 [ x86_64 ]
=* ruby-2.7.0 [ x86_64 ]
   ruby-2.7.4 [ x86_64 ]

# => - current
# =* - current && default
#  * - default
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在 ruby-2.6.6版本下,
执行 pod --version

➜  ~ pod --version
1.11.3
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但是在切换到

➜  ~ rvm use ruby-2.7.0 --default
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之后,

pod install 就报错

Could not find 'json' (>= 1.5.1) among 45 total gem(s)....
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解决办法.

重装gem

卸载gem

gem uninstall --all

没有权限
sudo gem uninstall --all
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重装gem

sudo gem install -n /usr/local/bin cocoapods
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测试

➜  ~ pod --version
1.11.3
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