错误TS2305：模块“/ node_modules / rxjs / Rx”没有导出成员'Subscribable'

我有一个以角度5构建的项目 . 这是package.json

{
  "name": "ff-client",
  "version": "0.2.0",
  "license": "",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint --type-check",
    "e2e": "ng e2e",
    "xprecommit": "ng lint --type-check && ng test --single-run --code-coverage",
    "xprepush": "ng build --prod",
    "i18n": "ng xi18n --i18n-format xlf --output-path src/locale --locale en --progress",
    "i18n-merge": "xliffmerge --profile xliffmerge.json",
    "browserstack": "ng e2e --no-serve --config protractor.browserstack.conf.js",
    "upgrade": "yarn upgrade-interactive --latest",
    "build-en": "ng build --prod --e deploy --output-path=dist/en --i18nFile=src/locale/messages.en.xlf --i18nFormat=xlf --locale=en --base-href /en/",
    "build-da": "ng build --prod --e deploy --output-path=dist/da --i18nFile=src/locale/messages.da.xlf --i18nFormat=xlf --locale=da --base-href /da/",
    "build-fo": "ng build --prod --e deploy --output-path=dist/fo --i18nFile=src/locale/messages.fo.xlf --i18nFormat=xlf --locale=fo --base-href /fo/",
    "build-root": "copy dist\\en\\web.config dist\\ && del dist\\en\\web.config && del dist\\da\\web.config && del dist\\fo\\web.config",
    "build-prod": "npm run build-en && npm run build-da && npm run build-fo && npm run build-root"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "5.2.9",
    "@angular/cdk": "^5.2.4",
    "@angular/common": "5.2.9",
    "@angular/compiler": "5.2.9",
    "@angular/core": "5.2.9",
    "@angular/flex-layout": "^5.0.0-beta.14",
    "@angular/forms": "5.2.9",
    "@angular/http": "5.2.9",
    "@angular/material": "^5.2.4",
    "@angular/platform-browser": "5.2.9",
    "@angular/platform-browser-dynamic": "5.2.9",
    "@angular/router": "5.2.9",
    "@angular/service-worker": "5.2.9",
    "@aspnet/signalr": "^1.0.0-rc1-update1",
    "@auth0/angular-jwt": "^1.0.0-beta.9",
    "@ngrx/effects": "^5.1.0",
    "@ngrx/router-store": "^5.0.1",
    "@ngrx/store": "^5.1.0",
    "@ngrx/store-devtools": "^5.1.0",
    "angular-in-memory-web-api": "^0.5.2",
    "applicationinsights-js": "^1.0.15",
    "core-js": "^2.5.3",
    "hammerjs": "^2.0.8",
    "moment": "^2.20.1",
    "ng-recaptcha": "^3.0.3",
    "ng2-file-upload": "^1.3.0",
    "ngrx-store-logger": "^0.2.0",
    "ngx-perfect-scrollbar": "^5.3.5",
    "redux-beacon": "^1.2.1",
    "rxjs": "^5.5.8",
    "zone.js": "^0.8.26"
  },
  "devDependencies": {
    "@angular/cli": "1.7.4",
    "@angular/compiler-cli": "5.2.9",
    "@angular/language-service": "5.2.9",
    "@types/jasmine": "~2.8.6",
    "@types/jasminewd2": "~2.0.2",
    "@types/node": "~9.4.6",
    "chai": "^4.1.2",
    "codelyzer": "~4.1.0",
    "cucumber": "^4.0.0",
    "husky": "^0.14.3",
    "jasmine-core": "~2.99.1",
    "jasmine-marbles": "^0.2.0",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~2.0.0",
    "karma-chrome-launcher": "~2.2.0",
    "karma-cli": "~1.0.1",
    "karma-coverage-istanbul-reporter": "^1.4.1",
    "karma-jasmine": "~1.1.0",
    "karma-jasmine-html-reporter": "^0.2.2",
    "karma-teamcity-reporter": "^1.0.1",
    "ngx-i18nsupport": "^0.12.0",
    "protractor": "^5.3.0",
    "protractor-cucumber-framework": "^4.2.0",
    "ts-node": "~4.1.0",
    "tslint": "~5.9.1",
    "typescript": "2.6.2"
  }
}

我已经下载了npm和angular-cli .

在安装这些之后，我做了npm install来获取所需的模块 . 但当我“服务”时，它显示错误 .

node_modules中的错误/ @ angular / flex-layout / core / typings / observable-media / observa ble-media.d.ts（1,22）：错误TS2305：模块'“D：/ Projects / FlexFunding / app-dk / Clie nt / node_modules / rxjs / Rx“'没有导出成员'可订阅' .

我知道现在它是角度6，rxjs已在此版本中更新 . 但是，如果不将此项目从角度版本5迁移到6，我该如何解决这个问题 . 我只需要构建并运行该项目 .

我已经尝试从运行项目的节点模块下替换rxjs文件夹 . 但没有运气 .

编辑：我已卸载当前版本并降级到版本角度cli版本1.7.4但错误是相同的 .