output: #fixed code
                                  @Override
      public void init() {
          cacheService = LedgerCacheService.getInstance();
          registerService();
          ledgerService = NulsContext.getServiceBean(LedgerService.class);
          coinManager = UtxoCoinManager.getInstance();
          UtxoOutputDataService outputDataService = NulsContext.getServiceBean(UtxoOutputDataService.class);
          coinManager.setOutputDataService(outputDataService);
          addNormalTxValidator();
          this.registerTransaction(TransactionConstant.TX_TYPE_COIN_BASE, CoinBaseTransaction.class, CoinDataTxService.getInstance());
          this.registerTransaction(TransactionConstant.TX_TYPE_TRANSFER, TransferTransaction.class, CoinDataTxService.getInstance());
          this.registerTransaction(TransactionConstant.TX_TYPE_UNLOCK, UnlockNulsTransaction.class, CoinDataTxService.getInstance());
          this.registerTransaction(TransactionConstant.TX_TYPE_LOCK, LockNulsTransaction.class, CoinDataTxService.getInstance());
      }
input: #vulnerable code 
                                  @Override
      public void init() {
          cacheService = LedgerCacheService.getInstance();
          registerService();
          ledgerService = NulsContext.getServiceBean(LedgerService.class);
          coinManager = UtxoCoinManager.getInstance();
          UtxoOutputDataService outputDataService = NulsContext. getServiceBean(UtxoOutputDataService.class);
          coinManager.setOutputDataService(outputDataService);
          ledgerService.init();
          addNormalTxValidator();
          UtxoCoinDataProvider provider = NulsContext.getServiceBean(UtxoCoinDataProvider.class);
          provider.setInputDataService(NulsContext.getServiceBean(UtxoInputDataService.class));
          provider.setOutputDataService(outputDataService);
  
  
          this.registerTransaction(TransactionConstant.TX_TYPE_COIN_BASE, CoinBaseTransaction.class, CoinDataTxService.getInstance());
          this.registerTransaction(TransactionConstant.TX_TYPE_TRANSFER, TransferTransaction.class, CoinDataTxService.getInstance());
          this.registerTransaction(TransactionConstant.TX_TYPE_UNLOCK, UnlockNulsTransaction.class, CoinDataTxService.getInstance());
          this.registerTransaction(TransactionConstant.TX_TYPE_LOCK, LockNulsTransaction.class, CoinDataTxService.getInstance());
      } 
                              #location 9 
                              #vulnerability type NULL_DEREFERENCE