（認知有限，如有不妥，還望告知，歡迎討論。）

問題產(chǎn)生情景

執(zhí)行vue upgrade是發(fā)生的報錯

'vue' is not recognized as an internal or external command

解決方法

執(zhí)行

?npm install -g @vue/cli

=END=

=reference=

[1] https://bobbyhadz.com/blog/not-recognized-as-internal-or-external-command-vue#:~:text=Conclusion%20%23,variable%20is%20set%20up%20correctly.