Your installed version of Erlang(6.2)is too old. Please install a more recent version

erlang版本太低，导致
Your installed version of Erlang(6.2)is too old. Please install a more recent version

这是低版本的erlang没删干净的缘故，导致后来下载高版本也没用
最简单的就是把低版本的下载回来，用低版本里面自带的删除程序删除
Your installed version of Erlang(6.2)is too old. Please install a more recent version

RabbitMQ：
停止：net stop RabbitMQ
启动：net start RabbitMQ

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