npm install 的时候 出现 git submodule 的错误... 怎么解决?

[helloworld12]

3089 silly saveTree ?~T~T?~T~@?~T~@ yui@3.18.1
3090 verbose stack Error: Command failed: /usr/bin/git submodule update -q --init --recursive
3090 verbose stack fatal: no submodule mapping found in .gitmodules for path 'support/web-socket-js'
3090 verbose stack
3090 verbose stack     at ChildProcess.exithandler (child_process.js:289:12)
3090 verbose stack     at ChildProcess.emit (events.js:182:13)
3090 verbose stack     at maybeClose (internal/child_process.js:962:16)
3090 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:251:5)
3091 verbose cwd /srv/xxx/web/web
3092 verbose Linux 4.4.0-117-generic
3093 verbose argv "/root/.nvm/versions/node/v10.11.0/bin/node" "/root/.nvm/versions/node/v10.11.0/bin/npm" "i"
3094 verbose node v10.11.0
3095 verbose npm  v6.4.1
3096 error code 128
3097 error Command failed: /usr/bin/git submodule update -q --init --recursive
3097 error fatal: no submodule mapping found in .gitmodules for path 'support/web-socket-js'
3098 verbose exit [ 1, true ]

太久没用 npm 了..., 一位朋友误删了以前的一个节点,然后现在在部署以前节点的服务...遇到这个问题(3,4 年前写的 nodejs 服务...)...

谢谢