diff --git a/src/components/chain/contract/Locker.js b/src/components/chain/contract/Locker.js
index 67b4f06..51b351b 100644
--- a/src/components/chain/contract/Locker.js
+++ b/src/components/chain/contract/Locker.js
@@ -29,14 +29,20 @@ export class Locker {
       const addressApproval = await nftContract.getApproved(tokenId)
       if ((addressApproval || "").toLowerCase() != lockAddress.toLowerCase()) {
         const resApproval = await nftContract.approve(lockAddress, tokenId);
-        await provider.waitForTransaction(resApproval.hash)
+        const res = await provider.waitForTransaction(resApproval.hash)
+        if (res.status == 0) {
+          throw new Error('approval failed')
+        }
         console.debug('approve', resApproval.hash)
       }
     }
     
     const contract = new ethers.Contract(lockAddress, lockAbi, provider.getSigner())
     const res = await contract.lock(nft, address, tokenIds)
-    await provider.waitForTransaction(res.hash)
+    const resConfirm = await provider.waitForTransaction(res.hash)
+    if (resConfirm.status == 0) {
+      throw new Error('lock failed')
+    }
     return res.hash
   }
 
@@ -66,7 +72,10 @@ export class Locker {
       }]
     })
     console.log(txHash)
-    await provider.waitForTransaction(txHash)
+    const res = await provider.waitForTransaction(txHash)
+    if (res.status == 0) {
+      throw new Error('transaction failed')
+    }
     return txHash
   }
   async execUnlock(provider, chainId, nft, tokenIds) {