angular=をv9に更新しましたが、v8に戻ろうとすると、このエラーが表示されます。すでに以下を試しました。
このエラーは引き続き表示されます。
私のスタックトレースは:
An unhandled exception occurred: Job name "..getProjectMetadata" does not exist.
See angular-errors.log for further details.
angular-errors.log:
[error] Error: Job name "..getProjectMetadata" does not exist.
at Observable._subscribe (/Front/node_modules/@angular-devkit/core/src/experimental/jobs/simple-scheduler.js:350:23)
at Observable._trySubscribe (/Front/node_modules/@angular-devkit/core/node_modules/rxjs/internal/Observable.js:44:25)
at Observable.subscribe (/Front/node_modules/@angular-devkit/core/node_modules/rxjs/internal/Observable.js:30:22)
at /Front/node_modules/@angular-devkit/core/node_modules/rxjs/internal/util/subscribeTo.js:22:31
at Object.subscribeToResult (/Front/node_modules/@angular-devkit/core/node_modules/rxjs/internal/util/subscribeToResult.js:10:45)
at SwitchMapSubscriber._innerSub (/Front/node_modules/@angular-devkit/core/node_modules/rxjs/internal/operators/switchMap.js:65:54)
at SwitchMapSubscriber._next (/Front/node_modules/@angular-devkit/core/node_modules/rxjs/internal/operators/switchMap.js:55:14)
at SwitchMapSubscriber.Subscriber.next (/Front/node_modules/@angular-devkit/core/node_modules/rxjs/internal/Subscriber.js:66:18)
at SwitchMapSubscriber.notifyNext (/Front/node_modules/@angular-devkit/core/node_modules/rxjs/internal/operators/switchMap.js:86:26)
at InnerSubscriber._next (/Front/node_modules/@angular-devkit/core/node_modules/rxjs/internal/InnerSubscriber.js:28:21)
at InnerSubscriber.Subscriber.next (/Front/node_modules/@angular-devkit/core/node_modules/rxjs/internal/Subscriber.js:66:18)
at /Front/node_modules/@angular-devkit/core/node_modules/rxjs/internal/util/subscribeTo.js:17:28
at Object.subscribeToResult (/Front/node_modules/@angular-devkit/core/node_modules/rxjs/internal/util/subscribeToResult.js:10:45)
at SwitchMapSubscriber._innerSub (/Front/node_modules/@angular-devkit/core/node_modules/rxjs/internal/operators/switchMap.js:65:54)
at SwitchMapSubscriber._next (/Front/node_modules/@angular-devkit/core/node_modules/rxjs/internal/operators/switchMap.js:55:14)
at SwitchMapSubscriber.Subscriber.next (/Front/node_modules/@angular-devkit/core/node_modules/rxjs/internal/Subscriber.js:66:18)
ng --version:
Angular CLI: 8.3.18
Node: 12.15.0
OS: darwin x64
Angular: 8.2.13
... animations, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router
Package Version
-----------------------------------------------------------
@angular-devkit/architect 0.803.18
@angular-devkit/build-angular 0.900.1
@angular-devkit/build-optimizer 0.900.1
@angular-devkit/build-webpack 0.900.1
@angular-devkit/core 8.3.18
@angular-devkit/schematics 8.3.18
@angular/cdk 8.2.3
@angular/cli 8.3.18
@angular/material 8.2.3
@ngtools/webpack 9.0.1
@schematics/angular 8.3.18
@schematics/update 0.803.18
rxjs 6.5.3
TypeScript 3.5.3
webpack 4.41.2
私の経験から、使用している新しいモジュールはangular9用に設計されており、可能であればインポートを次のようにアップグレードする必要があります。
"dependencies": {
"@angular/animations": "^9.1.9",
"@angular/cdk": "^9.2.4",
"@angular/common": "^9.1.9",
"@angular/compiler": "^9.1.9",
"@angular/core": "^9.1.9",
"@angular/forms": "^9.1.9",
"@angular/platform-browser": "^9.1.9",
"@angular/platform-browser-dynamic": "^9.1.9",
"@angular/router": "^9.1.9",
...
}
"devDependencies": {
"@angular-devkit/build-angular": "^0.901.7",
"@angular/cli": "^9.1.7",
"@angular/compiler-cli": "^9.1.9",
"@angular/language-service": "^9.1.9",
...
}
オープンで修正しました
package.jsonファイル
そして次の行で更新
@angular-devkit/build-angular": "^0.803.8"
次に実行します
npm i