How can I fix this exception I get after updating Angular to version 13-CodePudding

When running ng serve I get the following error after updating my angular version:

An unhandled exception occurred: Directory import 'C:\Users\xxx\Documents\desktop-server-client-app\desktop\server\client\node_modules\@angular-devkit\build-angular\src\dev-server' is not supported 
resolving ES modules imported from C:\Users\xxx\Documents\desktop-server-client-app\desktop\server\client\node_modules\@angular\cli\node_modules\@angular-devkit\architect\node\node-modules-architect-host.js
Did you mean to import C:/Users/xxx/Documents/desktop-server-client-app/desktop/server/client/node_modules/@angular-devkit/build-angular/src/dev-server/index.js?
See "C:\Users\xxx\AppData\Local\Temp\ng-TMJqg5\angular-errors.log" for further details.

Log output:

[error] Error [ERR_UNSUPPORTED_DIR_IMPORT]: Directory import 'C:\Users\xxx\Documents\desktop-server-client-app\desktop\server\client\node_modules\@angular-devkit\build-angular\src\dev-server' is not supported resolving ES modules imported from C:\Users\xxx\Documents\desktop-server-client-app\desktop\server\client\node_modules\@angular\cli\node_modules\@angular-devkit\architect\node\node-modules-architect-host.js
    Did you mean to import C:/Users/xxx/Documents/desktop-server-client-app/desktop/server/client/node_modules/@angular-devkit/build-angular/src/dev-server/index.js?
        at finalizeResolution (internal/modules/esm/resolve.js:272:17)
        at moduleResolve (internal/modules/esm/resolve.js:699:10)
        at Loader.defaultResolve [as _resolve] (internal/modules/esm/resolve.js:810:11)
        at Loader.resolve (internal/modules/esm/loader.js:85:40)
        at Loader.getModuleJob (internal/modules/esm/loader.js:229:28)
        at Loader.import (internal/modules/esm/loader.js:164:28)
        at importModuleDynamically (internal/modules/cjs/loader.js:1006:27)
        at exports.importModuleDynamicallyCallback (internal/process/esm_loader.js:30:14)
        at eval (eval at loadEsmModule (C:\Users\xxx\Documents\desktop-server-client-app\desktop\server\client\node_modules\@angular\cli\node_modules\@angular-devkit\architect\node\node-modules-architect-host.js:195:12), <anonymous>:3:1)
        at loadEsmModule (C:\Users\xxx\Documents\desktop-server-client-app\desktop\server\client\node_modules\@angular\cli\node_modules\@angular-devkit\architect\node\node-modules-architect-host.js:195:68)

Could somebody explain to me what this error means and how I could fix it? It seems to me that this is some kind of compatibility problem I can't do much about. My angular project so far just contains some boilerplate code, so it shouldn't be the problem.

Edit: My versions are the following:

Node: 14.15.0
npm: 6.14.8
Angular: 13.2.4

@angular-devkit/architect: 0.1202.16
@angular-devkit/build-angular: 12.2.16
@angular-devkit/core: 12.2.16
@angular-devkit/schematics: 13.2.5
@angular/cdk: 12.2.13
@angular/cli: 13.2.5
@angular/material: 12.2.13
@schematics/angular: 13.2.5
rxjs: 6.6.7
typescript: 4.5.5

CodePudding user response：

I faced this problem because I upgraded from Angular 11 to Angular 13 using --legacy-peer-depency flag.

In package.json were old dependencies still present.

Try to change

"@angular-devkit/build-angular": "~12.2.16" to "@angular-devkit/build-angular": "~13.2.5"

then run npm install.