ruby​​ on railsセットアップの問題：既に初期化済み

Question

私はレールサーバーを使ってレールプロジェクトを立ち上げようとしています。しかし、次のエラーメッセージが表示されました：

/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::VERSION 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::OPENSSL_VERSION 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::OPENSSL_LIBRARY_VERSION 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::OPENSSL_VERSION_NUMBER 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::OPENSSL_FIPS 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::Config::DEFAULT_CONFIG_FILE 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::PKCS7::Signer 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::PKCS7::TEXT 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::PKCS7::NOCERTS 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::PKCS7::NOSIGS 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::PKCS7::NOCHAIN 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::PKCS7::NOINTERN 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::SSL::OP_TLS_D5_BUG 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::SSL::OP_TLS_BLOCK_PADDING_BUG 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::SSL::OP_DONT_INSERT_EMPTY_FRAGMENTS 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::SSL::OP_ALL 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::SSL::OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::SSL::OP_SINGLE_ECDH_USE 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::SSL::OP_SINGLE_DH_USE 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::SSL::OP_EPHEMERAL_RSA 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::SSL::OP_CIPHER_SERVER_PREFERENCE 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::SSL::OP_TLS_ROLLBACK_BUG 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::SSL::OP_NO_SSLv2 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::SSL::OP_NO_SSLv3 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::SSL::OP_NO_TLSv1 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::SSL::OP_NO_TLSv1_1 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::SSL::OP_NO_TLSv1_2 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::SSL::OP_NO_TICKET 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_CRL_CHECK_ALL 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_IGNORE_CRITICAL 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_X509_STRICT 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_ALLOW_PROXY_CERTS 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_POLICY_CHECK 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_EXPLICIT_POLICY 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_INHIBIT_ANY 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_INHIBIT_MAP 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_NOTIFY_POLICY 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_EXTENDED_CRL_SUPPORT 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_USE_DELTAS 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_CHECK_SS_SIGNATURE 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_TRUSTED_FIRST 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_NO_ALT_CHAINS 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::PURPOSE_SSL_CLIENT 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::PURPOSE_SSL_SERVER 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::PURPOSE_NS_SSL_SERVER 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::PURPOSE_SMIME_SIGN 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::PURPOSE_SMIME_ENCRYPT 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::PURPOSE_CRL_SIGN 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::PURPOSE_ANY 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::PURPOSE_OCSP_HELPER 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::PURPOSE_TIMESTAMP_SIGN 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::TRUST_COMPAT 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::TRUST_SSL_CLIENT 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::TRUST_SSL_SERVER 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::TRUST_EMAIL 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::TRUST_OBJECT_SIGN 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::TRUST_OCSP_SIGN 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::TRUST_OCSP_REQUEST 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::TRUST_TSA 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::DEFAULT_CERT_AREA 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::DEFAULT_CERT_DIR 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::DEFAULT_CERT_FILE 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::DEFAULT_CERT_DIR_ENV 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::DEFAULT_CERT_FILE_ENV 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::X509::DEFAULT_PRIVATE_DIR 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::RESPONSE_STATUS_INTERNALERROR 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::RESPONSE_STATUS_MALFORMEDREQUEST 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::REVOKED_STATUS_NOSTATUS 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::RESPONSE_STATUS_SIGREQUIRED 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::RESPONSE_STATUS_SUCCESSFUL 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::RESPONSE_STATUS_TRYLATER 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::REVOKED_STATUS_AFFILIATIONCHANGED 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/x86_64-darwin15/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::REVOKED_STATUS_CACOMPROMISE 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:18: warning: constant OpenSSL::Cipher::Cipher is deprecated 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:24: warning: already initialized constant OpenSSL::Cipher::RC2 
/Users/dingqituo/.rvm/gems/ruby-2.4.0/gems/openssl-2.0.3/lib/openssl/cipher.rb:24: warning: previous definition of RC2 was here 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:18: warning: constant OpenSSL::Cipher::Cipher is deprecated 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:24: warning: already initialized constant OpenSSL::Cipher::RC4 
/Users/dingqituo/.rvm/gems/ruby-2.4.0/gems/openssl-2.0.3/lib/openssl/cipher.rb:24: warning: previous definition of RC4 was here 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:18: warning: constant OpenSSL::Cipher::Cipher is deprecated 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:24: warning: already initialized constant OpenSSL::Cipher::RC5 
/Users/dingqituo/.rvm/gems/ruby-2.4.0/gems/openssl-2.0.3/lib/openssl/cipher.rb:24: warning: previous definition of RC5 was here 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:28: warning: constant OpenSSL::Cipher::Cipher is deprecated 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:33: warning: already initialized constant OpenSSL::Cipher::AES128 
/Users/dingqituo/.rvm/gems/ruby-2.4.0/gems/openssl-2.0.3/lib/openssl/cipher.rb:33: warning: previous definition of AES128 was here 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:28: warning: constant OpenSSL::Cipher::Cipher is deprecated 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:33: warning: already initialized constant OpenSSL::Cipher::AES192 
/Users/dingqituo/.rvm/gems/ruby-2.4.0/gems/openssl-2.0.3/lib/openssl/cipher.rb:33: warning: previous definition of AES192 was here 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:28: warning: constant OpenSSL::Cipher::Cipher is deprecated 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:33: warning: already initialized constant OpenSSL::Cipher::AES256 
/Users/dingqituo/.rvm/gems/ruby-2.4.0/gems/openssl-2.0.3/lib/openssl/cipher.rb:33: warning: previous definition of AES256 was here 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:64: warning: constant OpenSSL::Cipher::Cipher is deprecated 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:64: warning: constant OpenSSL::Cipher::Cipher is deprecated 
/Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:64:in `<class:Cipher>': superclass mismatch for class Cipher (TypeError) 
    from /Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:16:in `<module:OpenSSL>' 
    from /Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:15:in `<top (required)>' 
    from /Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/openssl.rb:17:in `require' 
    from /Users/dingqituo/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/openssl.rb:17:in `<top (required)>' 
    from /Users/dingqituo/.rvm/gems/ruby-2.4.0@global/gems/activesupport-5.0.1/lib/active_support/key_generator.rb:2:in `require' 
    from /Users/dingqituo/.rvm/gems/ruby-2.4.0@global/gems/activesupport-5.0.1/lib/active_support/key_generator.rb:2:in `<top (required)>' 
    from /Users/dingqituo/.rvm/gems/ruby-2.4.0@global/gems/railties-5.0.1/lib/rails/application.rb:4:in `require' 
    from /Users/dingqituo/.rvm/gems/ruby-2.4.0@global/gems/railties-5.0.1/lib/rails/application.rb:4:in `<top (required)>' 
    from /Users/dingqituo/.rvm/gems/ruby-2.4.0@global/gems/railties-5.0.1/lib/rails.rb:11:in `require' 
    from /Users/dingqituo/.rvm/gems/ruby-2.4.0@global/gems/railties-5.0.1/lib/rails.rb:11:in `<top (required)>' 
    from /Users/dingqituo/.rvm/gems/ruby-2.4.0@global/gems/railties-5.0.1/lib/rails/commands/server.rb:4:in `require' 
    from /Users/dingqituo/.rvm/gems/ruby-2.4.0@global/gems/railties-5.0.1/lib/rails/commands/server.rb:4:in `<top (required)>' 
    from /Users/dingqituo/.rvm/gems/ruby-2.4.0@global/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:138:in `require' 
    from /Users/dingqituo/.rvm/gems/ruby-2.4.0@global/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:138:in `require_command!' 
    from /Users/dingqituo/.rvm/gems/ruby-2.4.0@global/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:83:in `server' 
    from /Users/dingqituo/.rvm/gems/ruby-2.4.0@global/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:49:in `run_command!' 
    from /Users/dingqituo/.rvm/gems/ruby-2.4.0@global/gems/railties-5.0.1/lib/rails/commands.rb:18:in `<top (required)>' 
    from /Users/dingqituo/summer_school/bin/rails:9:in `require' 
    from /Users/dingqituo/summer_school/bin/rails:9:in `<top (required)>' 
    from /Users/dingqituo/.rvm/gems/ruby-2.4.0/gems/spring-2.0.1/lib/spring/client/rails.rb:28:in `load' 
    from /Users/dingqituo/.rvm/gems/ruby-2.4.0/gems/spring-2.0.1/lib/spring/client/rails.rb:28:in `call' 
    from /Users/dingqituo/.rvm/gems/ruby-2.4.0/gems/spring-2.0.1/lib/spring/client/command.rb:7:in `call' 
    from /Users/dingqituo/.rvm/gems/ruby-2.4.0/gems/spring-2.0.1/lib/spring/client.rb:30:in `run' 
    from /Users/dingqituo/.rvm/gems/ruby-2.4.0/gems/spring-2.0.1/bin/spring:49:in `<top (required)>' 
    from /Users/dingqituo/.rvm/gems/ruby-2.4.0/gems/spring-2.0.1/lib/spring/binstub.rb:31:in `load' 
    from /Users/dingqituo/.rvm/gems/ruby-2.4.0/gems/spring-2.0.1/lib/spring/binstub.rb:31:in `<top (required)>' 
    from /Users/dingqituo/summer_school/bin/spring:15:in `require' 
    from /Users/dingqituo/summer_school/bin/spring:15:in `<top (required)>' 
    from bin/rails:3:in `load' 
    from bin/rails:3:in `<main>' 

Answer 1

これには現在issue open in OpenSSLがあります。あなたのGemfileにgem 'openssl', '2.0.2'を指定して、それがどうなるかを見てください。

注：できるだけ最新のopensslを最新の状態に保つことがベストだから、問題を見て、最新のopensslにアップグレードすることをお勧めします。