NPM install reports an error

download elementUI Source code Install dependency when npm install An error is as follows ：

Error log ：

110 verbose node v14.5.0
111 verbose npm  v6.14.5
112 error code ENOTFOUND
113 error errno ENOTFOUND
114 error network request to https://registry.npm.taobao.org/deepmerge failed, reason: getaddrinfo ENOTFOUND proxy1.bj.petrochina
115 error network This is a problem related to network connectivity.
115 error network In most cases you are behind a proxy or have bad network settings.
115 error network
115 error network If you are behind a proxy, please make sure that the
115 error network 'proxy' config is set properly.  See: 'npm help config'
116 verbose exit [ 1, true ]

After searching, it is possible to set up an agent in the company , Forget to cancel at home .
resolvent ：

npm config delete proxy
npm config delete https-proxy

Reference documents :npm How to set and cancel the proxy