错误的ERR！代码EPROTO npm ERR！ errno EPROTO

Question

我安装了node.js并安装了npm但我无法使用命令行安装bootstrap

 npm ERR! code EPROTO
    npm ERR! errno EPROTO
    npm ERR! request to https://registry.npmjs.org/bootstrap failed, reason: write EPROTO 140643417544512:error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol:../deps/openssl/openssl/ssl/s23_clnt.c:827:
    npm ERR! 

    npm ERR! A complete log of this run can be found in:
    npm ERR!     /home/smpl/.npm/_logs/2018-02-12T14_32_51_537Z-debug.log

（即使我尝试通过附加到index.html来安装bootstrap，但它不起作用。）