실행 npm install vue-router --save 에러 npm ERR! code ERESOLVE npm ERR! ERESOLVE unable to resolve dependency tree npm ERR! npm ERR! While resolving: navtest@0.1.0 npm ERR! Found: vue@2.7.16 npm ERR! node_modules/vue npm ERR! vue@"^2.7.16" from the root project npm ERR! npm ERR! Could not resolve dependency: npm ERR! peer vue@"^3.2.0" from vue-router@4.3.1 npm ERR! node_modules/vue-router npm ERR! v..