[TOOL-3260] SDK: Fix Pay Modal logging react-query error when opened

Author: MananTank

.changeset/gentle-dancers-raise.md

@@ -0,0 +1,5 @@
+---
+"thirdweb": patch
+---
+
+Fix thirdweb Pay Modal logging react-query error when opened

packages/thirdweb/src/react/web/ui/TransactionButton/TransactionModal.tsx

@@ -37,14 +37,19 @@ export function TransactionModal(props: ModalProps) {
   useQuery({
     queryKey: ["transaction-modal-event"],
     queryFn: () => {
-      if (!account || !wallet) return;
+      // Query data cannot be undefined, return null
+      if (!account || !wallet) {
+        return null;
+      }
       trackPayEvent({
         client: props.client,
         walletAddress: account.address,
         walletType: wallet.id,
         dstChainId: props.tx.chain.id,
         event: "open_pay_transaction_modal",
       });
+
+      return null;
     },
     enabled: !!wallet,
   });