Error on run vue add @akryum/vue-cli-plugin-ssr

When i run commande to install vue-cli-plugin-ssr i get this error:

Invoking generator for @akryum/vue-cli-plugin-ssr...
ERROR Error: Please install router plugin with 'vue add router'.
Error: Please install router plugin with 'vue add router'.
at module.exports (C:\Users\Cayrol\Documents\Afrilink_Projects\afrilink_livraison_new\refonte-business\node_modules\@akryum\vue-cli-plugin-ssr\generator\index.js:10:11)
at Generator.initPlugins (C:\Users\Cayrol\AppData\Local\Yarn\Data\global\node_modules\@vue\cli\lib\Generator.js:150:13)
at Generator.generate (C:\Users\Cayrol\AppData\Local\Yarn\Data\global\node_modules\@vue\cli\lib\Generator.js:168:16)
at runGenerator (C:\Users\Cayrol\AppData\Local\Yarn\Data\global\node_modules\@vue\cli\lib\invoke.js:111:19)
at processTicksAndRejections (internal/process/task_queues.js:95:5)
at async invoke (C:\Users\Cayrol\AppData\Local\Yarn\Data\global\node_modules\@vue\cli\lib\invoke.js:92:3)

I run vue add router but i get the same error