I am using windows 10, node 16.13.2, npm 8.1.2, angular-cli 13.0.4.
I saw 13 problems, why is that?:
[{
"resource": "/c:/Udemy/angular-testing-course/src/app/courses/home/home.component.html",
"owner": "_generated_diagnostic_collection_name_#3",
"severity": 8,
"message": "'mat-tab-group' is not a known element:\n1. If 'mat-tab-group' is an Angular component, then verify that it is part of this module.\n2. If 'mat-tab-group' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message.",
"source": "ng",
"startLineNumber": 5,
"startColumn": 3,
"endLineNumber": 34,
"endColumn": 19
},{
"resource": "/c:/Udemy/angular-testing-course/src/app/courses/home/home.component.html",
"owner": "_generated_diagnostic_collection_name_#3",
"severity": 8,
"message": "Property binding ngIf not used by any directive on an embedded template. Make sure that the property name is spelled correctly and all directives are listed in the \"@NgModule.declarations\".",
"source": "ng",
"startLineNumber": 8,
"startColumn": 5,
"endLineNumber": 18,
"endColumn": 20
},{
"resource": "/c:/Udemy/angular-testing-course/src/app/courses/home/home.component.html",
"owner": "_generated_diagnostic_collection_name_#3",
"severity": 8,
"message": "Can't bind to 'ngIf' since it isn't a known property of 'ng-container'.\n1. If 'ngIf' is an Angular directive, then add 'CommonModule' to the '@NgModule.imports' of this component.\n2. To allow any property add 'NO_ERRORS_SCHEMA' to the '@NgModule.schemas' of this component.",
"source": "ng",
"startLineNumber": 8,
"startColumn": 19,
"endLineNumber": 8,
"endColumn": 72
},{
"resource": "/c:/Udemy/angular-testing-course/src/app/courses/home/home.component.html",
"owner": "_generated_diagnostic_collection_name_#3",
"severity": 8,
"message": "The pipe 'async' could not be found",
"source": "ng",
"startLineNumber": 8,
"startColumn": 20,
"endLineNumber": 8,
"endColumn": 44
},{
"resource": "/c:/Udemy/angular-testing-course/src/app/courses/home/home.component.html",
"owner": "_generated_diagnostic_collection_name_#3",
"severity": 8,
"message": "'mat-tab' is not a known element:\n1. If 'mat-tab' is an Angular component, then verify that it is part of this module.\n2. If 'mat-tab' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message.",
"source": "ng",
"startLineNumber": 10,
"startColumn": 7,
"endLineNumber": 16,
"endColumn": 17
},{
"resource": "/c:/Udemy/angular-testing-course/src/app/courses/home/home.component.html",
"owner": "_generated_diagnostic_collection_name_#3",
"severity": 8,
"message": "Property binding ngIf not used by any directive on an embedded template. Make sure that the property name is spelled correctly and all directives are listed in the \"@NgModule.declarations\".",
"source": "ng",
"startLineNumber": 10,
"startColumn": 7,
"endLineNumber": 16,
"endColumn": 17
},{
"resource": "/c:/Udemy/angular-testing-course/src/app/courses/home/home.component.html",
"owner": "_generated_diagnostic_collection_name_#3",
"severity": 8,
"message": "Can't bind to 'ngIf' since it isn't a known property of 'mat-tab'.\n1. If 'mat-tab' is an Angular component and it has 'ngIf' input, then verify that it is part of this module.\n2. If 'mat-tab' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message.\n3. To allow any property add 'NO_ERRORS_SCHEMA' to the '@NgModule.schemas' of this component.",
"source": "ng",
"startLineNumber": 10,
"startColumn": 34,
"endLineNumber": 10,
"endColumn": 69
},{
"resource": "/c:/Udemy/angular-testing-course/src/app/courses/home/home.component.html",
"owner": "_generated_diagnostic_collection_name_#3",
"severity": 8,
"message": "Property binding ngIf not used by any directive on an embedded template. Make sure that the property name is spelled correctly and all directives are listed in the \"@NgModule.declarations\".",
"source": "ng",
"startLineNumber": 21,
"startColumn": 5,
"endLineNumber": 32,
"endColumn": 20
},{
"resource": "/c:/Udemy/angular-testing-course/src/app/courses/home/home.component.html",
"owner": "_generated_diagnostic_collection_name_#3",
"severity": 8,
"message": "Can't bind to 'ngIf' since it isn't a known property of 'ng-container'.\n1. If 'ngIf' is an Angular directive, then add 'CommonModule' to the '@NgModule.imports' of this component.\n2. To allow any property add 'NO_ERRORS_SCHEMA' to the '@NgModule.schemas' of this component.",
"source": "ng",
"startLineNumber": 21,
"startColumn": 19,
"endLineNumber": 21,
"endColumn": 72
},{
"resource": "/c:/Udemy/angular-testing-course/src/app/courses/home/home.component.html",
"owner": "_generated_diagnostic_collection_name_#3",
"severity": 8,
"message": "The pipe 'async' could not be found",
"source": "ng",
"startLineNumber": 21,
"startColumn": 20,
"endLineNumber": 21,
"endColumn": 44
},{
"resource": "/c:/Udemy/angular-testing-course/src/app/courses/home/home.component.html",
"owner": "_generated_diagnostic_collection_name_#3",
"severity": 8,
"message": "'mat-tab' is not a known element:\n1. If 'mat-tab' is an Angular component, then verify that it is part of this module.\n2. If 'mat-tab' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message.",
"source": "ng",
"startLineNumber": 23,
"startColumn": 7,
"endLineNumber": 30,
"endColumn": 17
},{
"resource": "/c:/Udemy/angular-testing-course/src/app/courses/home/home.component.html",
"owner": "_generated_diagnostic_collection_name_#3",
"severity": 8,
"message": "Property binding ngIf not used by any directive on an embedded template. Make sure that the property name is spelled correctly and all directives are listed in the \"@NgModule.declarations\".",
"source": "ng",
"startLineNumber": 23,
"startColumn": 7,
"endLineNumber": 30,
"endColumn": 17
},{
"resource": "/c:/Udemy/angular-testing-course/src/app/courses/home/home.component.html",
"owner": "_generated_diagnostic_collection_name_#3",
"severity": 8,
"message": "Can't bind to 'ngIf' since it isn't a known property of 'mat-tab'.\n1. If 'mat-tab' is an Angular component and it has 'ngIf' input, then verify that it is part of this module.\n2. If 'mat-tab' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message.\n3. To allow any property add 'NO_ERRORS_SCHEMA' to the '@NgModule.schemas' of this component.",
"source": "ng",
"startLineNumber": 23,
"startColumn": 33,
"endLineNumber": 23,
"endColumn": 68
}]
I am using windows 10, node 16.13.2, npm 8.1.2, angular-cli 13.0.4.
I saw 13 problems, why is that?: