更新cli版本后创建新的angular项目时出错

我在我的 mac 中安装了 angular cli 6.*，我想将此版本更新到 8.* 之后ng new app返回一个错误。

终端 ：

...
CREATE timelines/e2e/src/app.po.ts (251 bytes)
npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR!
npm ERR! While resolving: timelines@0.0.0
npm ERR! Found: jasmine-core@3.4.0
npm ERR! node_modules/jasmine-core
npm ERR! dev jasmine-core@"~3.4.0" from the root project
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! peer jasmine-core@">=3.5" from karma-jasmine-html-reporter@1.5.4
npm ERR! node_modules/karma-jasmine-html-reporter
npm ERR! dev karma-jasmine-html-reporter@"^1.4.0" 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 /Users/tarek/.npm/eresolve-report.txt for a full report.
npm ERR! A complete log of this run can be found in:
npm ERR! /Users/tarek/.npm/_logs/2021-04-30T10_18_04_291Z-debug.log
Package install failed, see above.


我试图删除与 Angular、npm、angular cli 等相关的所有内容……并重新安装它们，但错误仍然存​​在

package.json 文件：

{
"name": "timelines",
"version": "0.0.0",
"scripts": {
"ng": "ng",
"start": "ng serve",
"build": "ng build",
"test": "ng test",
"lint": "ng lint",
"e2e": "ng e2e"
},
"private": true,
"dependencies": {
"@angular/animations": "~8.2.0",
"@angular/common": "~8.2.0",
"@angular/compiler": "~8.2.0",
"@angular/core": "~8.2.0",
"@angular/forms": "~8.2.0",
"@angular/platform-browser": "~8.2.0",
"@angular/platform-browser-dynamic": "~8.2.0",
"@angular/router": "~8.2.0",
"rxjs": "~6.4.0",
"tslib": "^1.10.0",
"zone.js": "~0.9.1"
},
"devDependencies": {
"@angular-devkit/build-angular": "~0.802.2",
"@angular/cli": "~8.2.2",
"@angular/compiler-cli": "~8.2.0",
"@angular/language-service": "~8.2.0",
"@types/node": "~8.9.4",
"@types/jasmine": "~3.3.8",
"@types/jasminewd2": "~2.0.3",
"codelyzer": "^5.0.0",
"jasmine-core": "~3.4.0",
"jasmine-spec-reporter": "~4.2.1",
"karma": "~4.1.0",
"karma-chrome-launcher": "~2.2.0",
"karma-coverage-istanbul-reporter": "~2.0.1",
"karma-jasmine": "~2.0.1",
"karma-jasmine-html-reporter": "^1.4.0",
"protractor": "~5.4.0",
"ts-node": "~7.0.0",
"tslint": "~5.15.0",
"typescript": "~3.5.3"
}
}


我无法再创建项目了，请帮忙