I am facing issue your code

ERROR Error: NG02200: Cannot find a differ supporting object '[object Object]' of type 'object'. NgFor only supports binding to Iterables, such as Arrays. Did you mean to use the keyvalue

The vulnerabilities and other dependency warnings should be fixed by upgrading the dependencies:

$ npm install
npm WARN deprecated [email protected]: flatten is deprecated in favor of utility frameworks such as lodash.
npm WARN deprecated [email protected]: this library is no longer supported
npm WARN deprecated [email protected]: The querystring API is considered Legacy. new code should use the URLSearchParams API instead.
npm WARN deprecated [email protected]: request has been deprecated, see request/request#3142
npm WARN deprecated [email protected]: V0 is gone and the best V1 polyfill is now @ungap/custom-elements
npm WARN deprecated [email protected]: Please upgrade to version 7 or higher. Older versions may use Math.random() in certain circumstances, which is known to be problematic. See https://v8.dev/blog/math-random for details.
npm WARN deprecated [email protected]: Please upgrade to version 7 or higher. Older versions may use Math.random() in certain circumstances, which is known to be problematic. See https://v8.dev/blog/math-random for details.
npm WARN deprecated [email protected]: TSLint has been deprecated in favor of ESLint. Please see palantir/tslint#4534 for more information.
npm WARN deprecated [email protected]: core-js@<3.3 is no longer maintained and not recommended for usage due to the number of issues. Because of the V8 engine whims, feature detection in old core-js versions could cause a slowdown up to 100x even if nothing is polyfilled. Please, upgrade your dependencies to the actual version of core-js.

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11 vulnerabilities (9 moderate, 2 high)

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Hi Team

how to resolve this issue.

I dont see the complete css file where template uses following classes but these classes are not present in any of the css files (app css or course card css).
.course-title
.course-description

Can you please let me know or if they are really missing update the relevant CSS files?

Angular's beginners course lesson - injectable services describes the course as angular deep dive course. Also the previous lesson has the course card component developed but not the course-image component. it doesn't describe how to do that and directly skips to a lesson where we see course-image component in the template. Even though learned developers will know how it works and how it came there there has to be some explaination.
Please remember we This is a paid course and as paid users we want flawless experience.

1. so code and description in the video doesnt match.
2. narration talks about altogether different course
3. no mention of some sections.
4. also in previous to previous lesson ends with comment that we will learn ng-container which never is described in this course.?
   Why so much errors?

Hi. I tried to run the laster master branch, but there is an issue that appears to be introduced with angular 9. I fixed it in my forked repo.
stack overflow similar issue

Upgrading codelyzer from 0.0.28 to 6.0.0 worked for me

Expectation: Running the tests with npm test works.

Actual: The test file highlighted.directive.spec.ts currently looks like this on master:

import { HighlightedDirective } from './highlighted.directive';

describe('HighlightedDirective', () => {
  it('should create an instance', () => {
    const directive = new HighlightedDirective();
    expect(directive).toBeTruthy();
  });
});

However, the only constructor of HighlightedDirective has a non-optional argument:

constructor(private coursesService: CoursesService) {

    console.log('coursesService highlighted ' + coursesService.id);

}

A similar problem exists with ngx-useless.directive.spec.ts and ngx-useless.directive.ts, here we're missing two parameters:

constructor(private templateRef: TemplateRef<any>,
            private viewContainer: ViewContainerRef) {


}

For this reason, running npm test produces the following error message:

ERROR in src/app/courses/directives/highlighted.directive.spec.ts(5,23): error TS2554: Expected 1 arguments, but got 0.
src/app/courses/directives/ngx-unless.directive.spec.ts(5,23): error TS2554: Expected 2 arguments, but got 0.

Hi,The server run on port 9000,then how did api request to port 4200 works?In my case it returns 404 error

GET http://localhost:4200/api/courses?page=1&pageSize=10 404 (Not Found)
http://localhost:9000/api/courses

C:\Users\home\3-services\3-services>npm run server

[email protected] server
./node_modules/.bin/ts-node -P ./server.tsconfig.json ./server.ts

'.' is not recognized as an internal or external command,
operable program or batch file.

C:\Users\home\3-services\3-services>

How to resolve this issue while using Observable.

ERROR Error: NG02200: Cannot find a differ supporting object '[object Object]' of type 'object'. NgFor only supports binding to Iterables, such as Arrays. Did you mean to use the keyvalue

Hello,

I followed the guide on internationalization and I'm sad to inform you, that it is outdated.
You already updated this repo to angular v13, but the i18n fields in the angular.json don't work anymore since v11.
I tested out your current master, then I also tested out some older commits to find out why it doesn't work.

When you run "ng build -c fr" it fails with the error:
Schema validation failed with the following errors: Data path "" must NOT have additional properties(i18nFile).

Then I tested the same command with commit "77a89a4226cc90e55dd1a8352f2e237b3e78d1b9" labeled "upgrade to angular 12" and I got the same result.

Commit: "88288b6f03384ff1ef916c5310cdd58609908f48" labeled "upgrade to Angular 11 and Node 14" worked, but it told me:

Option "i18nFile" is deprecated: Use 'locales' object in the project metadata instead.
Option "i18nLocale" is deprecated: Use 'localize' instead.

At the start when I was building the fr configuration.

Commit: "ec06a6131bd1c37a95d797002727d7ce6a502a6d" labeled "upgrade to angular 10" also worked, but without warning.

The way Angular handles i18n now is actually through adding locales to the workspace. It is very confusing to me at the moment, so I sadly can't point you to resources that will help you update your course.

You must add

import { HttpClient } from '@angular/common/http';

to file app.component.ts in order to compile the lesson.

C:\Learning\angular-course-3-services-finished>npm run server

[email protected] server
node_modules/.bin/ts-node -P ./server.tsconfig.json ./server.ts

'node_modules' is not recognized as an internal or external command,
operable program or batch file.

I tried editing the "." in package.json "server": "node_modules/.bin/ts-node -P ./server.tsconfig.json ./server.ts".
still the same error.

Hello,

When cloning the project, and after downgrading to node 16 as directed in the repo, I receive this error and cannot run npm install on the cloned repo

npm ERR! code ERESOLVE
npm ERR! ERESOLVE could not resolve
npm ERR! 
npm ERR! While resolving: [email protected]
npm ERR! Found: [email protected]
npm ERR! node_modules/tslint
npm ERR!   dev tslint@"~6.1.0" from the root project
npm ERR! 
npm ERR! Could not resolve dependency:
npm ERR! peer tslint@"^3.9.0" from [email protected]
npm ERR! node_modules/codelyzer
npm ERR!   dev codelyzer@"^0.0.28" from the root project
npm ERR! 
npm ERR! Conflicting peer dependency: [email protected]
npm ERR! node_modules/tslint
npm ERR!   peer tslint@"^3.9.0" from [email protected]
npm ERR!   node_modules/codelyzer
npm ERR!     dev codelyzer@"^0.0.28" 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! 

Any assistance would be appreciated.