invokeContract keeps reporting UNKNOWN: NOT_ENOUGH_UTXO_ERROR

[springrain]

 public static void main(String[] args) {
        //初始化客户端
        XuperClient client = new XuperClient("192.168.0.10:37101");
        //导入账户证书
        Account account = Account.create("D:/keys");

        //account.setContractAccount("XC1111111111111111@xuper");

        Map<String, byte[]> map = new HashMap<>();
        map.put("key", "stones".getBytes());

        Transaction tx = client.invokeContract(account, "native", "javacounter", "get", map);

       // Transaction tx = client.queryContract(account, "native", "javacounter", "get", map);
        System.out.println("response: " + tx.getContractResponse().getBodyStr());
    }

client.queryContract is normal, client.invokeContract keeps reporting

Exception in thread "main" java.lang.RuntimeException: io.grpc.StatusRuntimeException: UNKNOWN: NOT_ENOUGH_UTXO_ERROR
at com.baidu.xuper.api.Proposal.build(Proposal.java:193)
at com.baidu.xuper.api.XuperClient.invokeContract(XuperClient.java:100)
at JavaSDKDemo.main(JavaSDKDemo.java:24)
Caused by: io.grpc.StatusRuntimeException: UNKNOWN: NOT_ENOUGH_UTXO_ERROR
at io.grpc.stub.ClientCalls.toStatusRuntimeException(ClientCalls.java:240)
at io.grpc.stub.ClientCalls.getUnchecked(ClientCalls.java:221)
at io.grpc.stub.ClientCalls.blockingUnaryCall(ClientCalls.java:140)
at com.baidu.xuper.pb.XchainGrpc$XchainBlockingStub.preExecWithSelectUTXO(XchainGrpc.java:1763)
at com.baidu.xuper.api.Proposal.build(Proposal.java:187)
... 2 more

pom.xml dependency

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>com.baidu.xuper</groupId>
      <artifactId>xuper-java-sdk</artifactId>
      <version>0.1.1</version>
    </dependency>
  </dependencies>

[godeamon]

@springrain The account should have enough tokens(xuper) to invoke the contract.