android webview crash no internet

public class MainActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        webView = findViewById(R.id.webView);
        if(isNetworkConnected(this)){
            webView.loadUrl("https://site.ru/");
        }
        else{
            webView.loadUrl("file:///android_asset/lost.html");
        }
    }
    private boolean isNetworkConnected(Context context) {
        ConnectivityManager cm =
                (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
        return activeNetwork != null && activeNetwork.isConnectedOrConnecting();
    }
}