3. Angular HTTP Client Modules
   HttpModuleUsage import { HttpModule } from '@angular/http'; @NgModule({ imports: [HttpModule], // ... }) export class AppModule {}
4. Parsing Error in Angular HttpClient
   Understanding the ErrorThis error typically occurs when the Angular HttpClient encounters issues while attempting to parse the response body from an HTTP request
5. HttpClient Header Not Sending
   Incorrect Header SyntaxWhitespace Avoid leading or trailing whitespace in header values.Case Sensitivity HTTP headers are case-sensitive