Apparently my app does not recognize the NFC plugin or it does not know how to install it correctly. I'm trying to make an app with angular Ionic + capacitor. One of the components must be able to read NFC messages. Since I am a student and I have no previous experience working with Ionic and my experience with Angular is very limited, I will try to comment step by step on what I did. Searching the internet I found this: https://www.npmjs.com/package/@awesome-cordova-plugins/nfc so I did the following: npm install @awesome-cordova-plugins/nfc npm install @awesome-cordova-plugins/core and in NfcReaderComponent I try the following: import { NFC } from '@awesome-cordova-plugins/nfc/ngx'; ... constructor( private nfc: NFC, <-- private ticketService: TicketService, private transportService: TransportService, private router: Router ) { } ... Now when I try to open said component this error appears: ERROR NullInjectorError: NullInjectorError: No provider for [object Object]! at NullInjector.get (core.mjs:1660:27) at R3Injector.get (core.mjs:3106:33) at R3Injector.get (core.mjs:3106:33) at R3Injector.get (core.mjs:3106:33) at ChainedInjector.get (core.mjs:16754:36) at lookupTokenUsingModuleInjector (core.mjs:5747:39) at getOrCreateInjectable(core.mjs:5795:12) at Module.ɵɵdirectiveInject (core.mjs:11331:19) at NodeInjectorFactory.NfcReaderComponent_Factory [as factory] (nfc-reader.component.ts:25:32) at getNodeInjectable (core.mjs:6007:44) i also get this error on android studio: plugin_not_installed link to the repo: https://github.com/ManuSureda/SUBD-T I think I'm not installing or provisioning the plugin correctly, but I don't really understand how to fix this. Update: Apparently I needed to install phonegap-nfc too npm i phonegap-nfc now it lets me inject NFC into app.module.ts ... import { NFC } from '@awesome-cordova-plugins/nfc/ngx'; @NgModule({ declarations: [AppComponent], imports: [...], providers: [ ... NFC ], bootstrap: [AppComponent], }) export class AppModule {} with 'ionic serve' seems to work just fine but i share this warning just in case that it matters: Native: tried calling NFC.enabled, but Cordova is not available. Make sure to include cordova.js or run in a device/simulator now the new problem is: when i try to run the app through android studio i got this error: FAILURE: Build failed with an exception. What went wrong: Execution failed for task ':capacitor-cordova-android-plugins:compileDebugJavaWithJavac'. Compilation failed; see the compiler error output for details. Try: Run with --info option to get more log output. Run with --scan to get full insights. Exception is: org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':capacitor-cordova-android-plugins:compileDebugJavaWithJavac'.<30 internal lines> Caused by: org.gradle.api.internal.tasks.compile.CompilationFailedException: Compilation failed; see the compiler error output for details. <149 internal lines> Task :capacitor-cordova-android-plugins:compileDebugJavaWithJavac FAILED C:\Users\Manuel\Desktop\Seminario-UTN\Frontend\SUBD-transport\android\capacitor-cordova-android-plugins\src\main\java\com\chariotsolutions\nfc\plugin\NfcPlugin.java:550: error: cannot find symbol nfcAdapter.setNdefPushMessage(p2pMessage, getActivity()); ^ symbol: method setNdefPushMessage(NdefMessage,Activity) location: variable nfcAdapter of type NfcAdapter Note: Some input files use or override a deprecated API. Note: Recompile with -Xlint:deprecation for details. Note: C:\Users\Manuel\Desktop\Seminario-UTN\Frontend\SUBD-transport\android\capacitor-cordova-android-plugins\src\main\java\cordova\plugins\Diagnostic.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details. 9 errors Continue reading...