npm install 报错 npm ERR! code ERESOLVE npm ERR! ERESOLVE unable to resolve dependency tree问题解决

问题报错：

npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR!
npm ERR! While resolving: [email protected]
npm ERR! Found: [email protected]
npm ERR! node_modules/swiper
npm ERR!   swiper@"^6.4.10" from the root project
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! peer swiper@"^5.2.0" from [email protected]
npm ERR! node_modules/vue-awesome-swiper
npm ERR!   vue-awesome-swiper@"^4.1.1" from the root project
npm ERR!
npm ERR! Fix the upstream dependency conflict, or retry
npm ERR! this command with --force, or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.
npm ERR!
npm ERR! See C:\Users\Administrator\AppData\Local\npm-cache\eresolve-report.txt for a full report.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\Administrator\AppData\Local\npm-cache\_logs\2021-12-20T03_09_32_242Z-debug.log

问题原因：大概率是版本问题，npm7.x的版本比npm6.x更严格

查询下版本，是否是npm7.x的版本。

指令：npm -V

解决方法：

1、降级到npm6.x
2、npm i --legacy-peer-deps （更有效）