Você tem dependências incompatíveis. Resolvi esse problema alterando o package.json de outro projeto angular e, depois de alterar o packag.json, alteramos apenas as versões das dependências.
após a alteração, escreva:
-npm link
-npm serve -o
então é trabalho :)
{
"name": "angular-jwt-auth",
"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": "^7.1.4",
"@angular/cdk": "^7.3.1",
"@angular/common": "~7.1.0",
"@angular/compiler": "~7.1.0",
"@angular/core": "~7.1.0",
"@angular/forms": "~7.1.0",
"@angular/http": "^6.1.10",
"@angular/material": "^7.3.1",
"@angular/platform-browser": "~7.1.0",
"@angular/platform-browser-dynamic": "~7.1.0",
"@angular/router": "~7.1.0",
"@ng-bootstrap/ng-bootstrap": "^4.2.0",
"@types/jquery": "^3.3.29",
"angular-6-datatable": "^0.8.0",
"bootstrap": "^4.3.1",
"chart.js": "^2.8.0",
"core-js": "^2.5.4",
"jquery": "^3.4.1",
"rxjs": "~6.3.3",
"zone.js": "~0.8.26"
},
"devDependencies": {
"@angular-devkit/build-angular": "~0.11.0",
"@angular/cli": "~7.1.0",
"@angular/compiler-cli": "~7.1.0",
"@angular/language-service": "~7.1.0",
"@types/chart.js": "^2.7.53",
"@types/jasmine": "^2.8.16",
"@types/jasminewd2": "^2.0.6",
"@types/node": "~8.9.4",
"codelyzer": "~4.2.1",
"jasmine-core": "~2.99.1",
"jasmine-spec-reporter": "~4.2.1",
"karma": "~3.1.1",
"karma-chrome-launcher": "~2.2.0",
"karma-coverage-istanbul-reporter": "~2.0.1",
"karma-jasmine": "~1.1.2",
"karma-jasmine-html-reporter": "^0.2.2",
"protractor": "~5.4.0",
"ts-node": "~7.0.0",
"tslint": "~5.11.0",
"typescript": "~3.1.6"
}