I have created a WebView of this website https://smartfix.pk/ but in my app, WhatsApp is not working, when I click it gives me the error

webpage at whatsapp://send/?phone=923005475032&text=Hello%2C%20I%20have%20a%20question%20about%20SmartFix%20Services could not be loaded because: net::ERR_UNKNOWN_URL_SCHEME
public class MainActivity extends AppCompatActivity { WebView web; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); web = findViewById(R.id.webView); WebSettings webSettings = web.getSettings(); webSettings.setJavaScriptEnabled(true); web.setWebViewClient(new Callback()); web.loadUrl("https://smartfix.pk/"); } private class Callback extends WebViewClient { @Override public boolean shouldOverrideKeyEvent(WebView view, KeyEvent event) { return false; } } }