lateinit property accessToken has not been initialized Andriod 11

[Manish96]

CheckoutConfig config = new CheckoutConfig(getApplication(),
        PayPalConfig.PAYPAL_CLIENT_ID,
        Environment.SANDBOX,
        String.format("%s://paypalpay", BuildConfig.APPLICATION_ID),
        CurrencyCode.USD,
        UserAction.PAY_NOW,
        new SettingsConfig(
                true,
                false
        )
);
PayPalCheckout.setConfig(config);

private void getPayPalPayment(String amount)
{
    double usdAmount = Double.parseDouble(amount)/dollorRate;
    usdAmount = (int)(Math.round(usdAmount*100))/100.0;
    String payAmount = String.valueOf(usdAmount);
    payPalButton.setup(
            new CreateOrder() {
                @Override
                public void create(@NotNull CreateOrderActions createOrderActions) {
                    ArrayList purchaseUnits = new ArrayList<>();
                    purchaseUnits.add(new PurchaseUnit.Builder().amount(new Amount.Builder().currencyCode(CurrencyCode.USD).value(payAmount).build()).build());
                    Order order = new Order(OrderIntent.CAPTURE, new AppContext.Builder().userAction(UserAction.PAY_NOW).build(), purchaseUnits);
                    createOrderActions.create(order, (CreateOrderActions.OnOrderCreated) null);
                }
            },
            new OnApprove() {
                @Override
                public void onApprove(@NotNull Approval approval) {
                    approval.getOrderActions().capture(new OnCaptureComplete() {
                        @Override
                        public void onCaptureComplete(@NotNull CaptureOrderResult result) {
                            Log.e("CaptureOrder", String.format("CaptureOrderResult: %s", result));
                            sendDataToServer("1","");
                        }
                    });
                }
            },
            new OnCancel() {
                @Override
                public void onCancel()
                {
                    Log.e("OnCancel", "Buyer cancelled");
                    sendDataToServer("0","");

                }
            },new OnError() {
                @Override
                public void onError(@NotNull ErrorInfo errorInfo) {
                    Log.e("OnError", String.format("Error: %s", errorInfo));
                   sendDataToServer("0","");
                }
            });
              payPalButton.performClick();
           }

  Process: com.ojassoft.vartauser, PID: 14512
kotlin.UninitializedPropertyAccessException: lateinit property accessToken has not been initialized
at com.paypal.pyplcheckout.utils.PYPLCheckoutUtils.getCheckoutLiteUrl(PYPLCheckoutUtils.kt:240)
at com.paypal.pyplcheckout.utils.PYPLCheckoutUtils.getCheckoutLiteUrl$default(PYPLCheckoutUtils.kt:172)
at com.paypal.pyplcheckout.utils.PYPLCheckoutUtils.fallBackToWeb(PYPLCheckoutUtils.kt:340)
at com.paypal.pyplcheckout.utils.PYPLCheckoutUtils.fallBack(PYPLCheckoutUtils.kt:314)
at com.paypal.pyplcheckout.auth.AuthHandler.authFailure(AuthHandler.kt:90)
at com.paypal.pyplcheckout.flavorauth.ThirdPartyAuth$2.completeWithFailure(ThirdPartyAuth.java:122)
at com.paypal.authcore.authentication.Authenticator$b.onTokenRequestCompleted(Unknown Source:6)
at com.paypal.openid.AuthorizationService$b.a(Unknown Source:57)
at com.paypal.openid.AuthorizationService$b.onPostExecute(Unknown Source:2)
at android.os.AsyncTask.finish(AsyncTask.java:771)
at android.os.AsyncTask.access$900(AsyncTask.java:199)
at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:788)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:260)
at android.app.ActivityThread.main(ActivityThread.java:8269)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:612)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1006)