开启ssr之后，就没法用 plugin('extract-css').use(... 了，这是怎么回事？

[kwooshung]

如题，报错信息如下：
LOG insert analytics
WARN The manifest file will be generated if enabling dynamicImport in ssr.
Cannot call .tap() on a plugin that has not yet been defined. Call plugin('extract-css').use() first.
Error: Cannot call .tap() on a plugin that has not yet been defined. Call plugin('extract-css').use() first.