fix some problem

Helius

2022-06-08 21c4edde92e2c7bade302db52329422821f0a8d5

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

@@ -103,4 +103,9 @@
    public static void main(String[] args) {
//        System.out.println(INSTANCE.transfer("TFGbYzGv4Zt2nzFM3uU3uCJZY67WKSveG9", BigDecimal.valueOf(5)));;
    }

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