something is running wrong !

[Mora-5-Love]

BigInteger h = ecc_bc_spec.getH();
		if (h != null) {
			ECPoint S = publicKey.multiply(h);
			if (S.isInfinity())
				throw new IllegalStateException();
		}

in my environment it warns in ECPoint S = publicKey.multiply(h) of NULLPoint Exception , please check Exception in thread "main" java.lang.NullPointerException
at com.SM2.encrypt(SM2.java:146)
at com.SM2.main(SM2.java:816)