2
我刚刚安装了Ruby on Rails v5,但是当我运行rails服务器并去浏览器,这个错误出现?没有连接池与ID主发现
def retrieve_connection(spec_name) #:nodoc:
pool = retrieve_connection_pool(spec_name)
raise ConnectionNotEstablished, "No connection pool with id #{spec_name} found." unless pool
conn = pool.connection
raise ConnectionNotEstablished, "No connection for #{spec_name} in connection pool" unless conn
conn
http://stackoverflow.com/questions/38212305/cant-access-localhost-on-ruby-on-rails是一个开始。我建议使用Google搜索确切的错误。首次安装/运行时可能有些共同点 – mmcrae