fix some problem

Helius

2022-06-09 8f090c91e2e2b0536d0900b935948e77a5f0979d

 src/main/java/cc/mrbird/febs/dapp/chain/ContractChainService.java

@@ -22,4 +22,6 @@
    int decimals();

    BigInteger blockNumber();

    BigInteger totalSupply();
}