.

src/main/java/com/izouma/nineth/service/AssetMintService.java

@@ -44,7 +44,7 @@ public class AssetMintService {
             userRepo.save(user);
         }
         try {
-            NFT nft = nftService.createToken(user.getNftAccount() + "_");
+            NFT nft = nftService.createToken(user.getNftAccount());
             if (nft != null) {
                 asset.setTokenId(nft.getTokenId());
                 asset.setBlockNumber(nft.getBlockNumber());