diff --git a/app/src/com/jc/jcfw/google/PayClient.java b/app/src/com/jc/jcfw/google/PayClient.java
index 9114732..d205d85 100644
--- a/app/src/com/jc/jcfw/google/PayClient.java
+++ b/app/src/com/jc/jcfw/google/PayClient.java
@@ -63,6 +63,8 @@ public class PayClient extends Activity implements PurchasesUpdatedListener {
         if (billingResult.getResponseCode() == BillingClient.BillingResponseCode.OK) {
           // The BillingClient is ready. You can query purchases here.
           Log.i(TAG, "BillingClient is ready");
+        } else {
+          Log.i(TAG, "error init BillingClient with error:: " +billingResult.getResponseCode());
         }
       }
 
@@ -125,9 +127,10 @@ public class PayClient extends Activity implements PurchasesUpdatedListener {
     }
   }
   private void purchaseUpdateCb(String funId, String error, String dataStr) {
-    if (funId == null) {
+    if (funId == null || funId.isEmpty()) {
       if (mFunId != null && !mFunId.isEmpty()) {
-        runOnUiThread(() -> JcSDK.nativeCb(mFunId, error, dataStr));
+        final String _funId = mFunId;
+        runOnUiThread(() -> JcSDK.nativeCb(_funId, error, dataStr));
         mFunId = null;
       }
     } else {