fastlane 报错 bundle过低 ruby-2.6.3

An error occurred while installing unf_ext (0.0.7.6), and Bundler
cannot continue.
Make sure that gem install unf_ext -v '0.0.7.6' succeeds before bundling.

解决 方法

1. &bundler update / &gem install bundler
2. &bundle install
3. &fastlane add_plugin pgyer