C:\Users\Administrator\Desktop\project\ruoyi-vue-pro\yudao-admin-ui>npm install
npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR!
npm ERR! While resolving: ruoyi@3.3.0
npm ERR! Found: bpmn-js@8.9.0
npm ERR! node_modules/bpmn-js
npm ERR!   dev bpmn-js@"^8.8.3" from the root project
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! peer bpmn-js@"^3.x || ^4.x || ^5.x || ^6.x || ^7.x" from bpmn-js-properties-panel@0.37.6
npm ERR! node_modules/bpmn-js-properties-panel
npm ERR!   dev bpmn-js-properties-panel@"^0.37.2" 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\2022-01-22T09_36_23_504Z-debug-0.log

解决 :  npm i --legacy-peer-deps