fix some problem

Helius

2022-06-09 8f090c91e2e2b0536d0900b935948e77a5f0979d

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

@@ -108,4 +108,9 @@
    public BigInteger blockNumber() {
        return null;
    }

    @Override
    public BigInteger totalSupply() {
        return null;
    }
}