• create a new project from the command line ng new today-ng
• then cd today-ng enter the newly created project
• add ng-zorro-antd via the command ng add ng-zorro-antd
• the following error occurred:

• asked the official to modify the source, so I used npm-- registry https://registry.npm.taobao.org info underscore to modify it to Taobao"s source, using the same set of commands above:

    ng new today-ng
    cd today-ng
    ng add ng-zorro-antd

• as a result, the error is the same as above. If you ask the official again, you will not answer. How to solve this problem?