![No provider available from registry localhost:9090 for service xxx/com.alibaba.cloud.dubbo.service.DubboMetadataService:1.0.0 on consumer 172.16.4.30 use dubbo version 2.7.8, please check status of providers(disabled, not registered or in blacklist) No provider available from registry localhost:9090 for service xxx/com.alibaba.cloud.dubbo.service.DubboMetadataService:1.0.0 on consumer 172.16.4.30 use dubbo version 2.7.8, please check status of providers(disabled, not registered or in blacklist)](https://user-images.githubusercontent.com/24970676/119493636-fba98d80-bd92-11eb-88f9-fcc14fafd77d.png)
No provider available from registry localhost:9090 for service xxx/com.alibaba.cloud.dubbo.service.DubboMetadataService:1.0.0 on consumer 172.16.4.30 use dubbo version 2.7.8, please check status of providers(disabled, not registered or in blacklist)
![NullInjectorError: R3InjectorError(AppModule)[HttpClient -> HttpClient -> HttpClient]: · Issue #10 · manfredsteyer/module-federation-with-angular-dynamic-workflow-designer · GitHub NullInjectorError: R3InjectorError(AppModule)[HttpClient -> HttpClient -> HttpClient]: · Issue #10 · manfredsteyer/module-federation-with-angular-dynamic-workflow-designer · GitHub](https://user-images.githubusercontent.com/38735215/103210546-ea676c80-492b-11eb-9111-25d47b3b4a85.png)
NullInjectorError: R3InjectorError(AppModule)[HttpClient -> HttpClient -> HttpClient]: · Issue #10 · manfredsteyer/module-federation-with-angular-dynamic-workflow-designer · GitHub
![NullInjectorError: No provider for OidcSecurityService · Issue #613 · damienbod/angular-auth-oidc-client · GitHub NullInjectorError: No provider for OidcSecurityService · Issue #613 · damienbod/angular-auth-oidc-client · GitHub](https://user-images.githubusercontent.com/42120164/150980045-9be17aa3-670c-4fd3-88a0-92e0f53ad26c.png)
NullInjectorError: No provider for OidcSecurityService · Issue #613 · damienbod/angular-auth-oidc-client · GitHub
![unit testing - Karma + Jasmine + Angular 4 - NullInjectorError: No provider for HttpClient - Stack Overflow unit testing - Karma + Jasmine + Angular 4 - NullInjectorError: No provider for HttpClient - Stack Overflow](https://i.stack.imgur.com/ULtow.jpg)