运行gem install prdns，遇错

[briteming]

hi. 在mac上。 yudeMacBook-Air:~ brite$ gem install prdns ERROR: Loading command: install (LoadError) dlopen(/usr/local/Cellar/ruby/2.6.3/lib/ruby/2.6.0/x86_64-darwin16/openssl.bundle, 9): Library not loaded: /usr/local/opt/openssl/lib/libssl.1.0.0.dylib Referenced from: /usr/local/Cellar/ruby/2.6.3/lib/ruby/2.6.0/x86_64-darwin16/openssl.bundle Reason: image not found - /usr/local/Cellar/ruby/2.6.3/lib/ruby/2.6.0/x86_64-darwin16/openssl.bundle ERROR: While executing gem ... (NoMethodError) undefined method `invoke_with_build_args' for nil:NilClass yudeMacBook-Air:~ brite$ which gem /usr/local/opt/ruby/bin/gem yudeMacBook-Air:~ brite$ which ruby /usr/local/opt/ruby/bin/ruby yudeMacBook-Air:~ brite$ gem --version 3.0.3 yudeMacBook-Air:~ brite$

怎么解决？