Vue packages version mismatch: vue@xxx vue-server-renderer@xxx

Vue packages version mismatch:

- vue@xxx

- vue-server-renderer@xxx

This may cause things to work incorrectly. Make sure to use the same version for both.

……

原因：vue与vue-server-renderer版本不一致导致

解决：把package.json中的vue和vue-server-renderer版本改为一致就可以了