diff --git a/README.adoc b/README.adoc
index fe6b885f..24709cdd 100644
--- a/README.adoc
+++ b/README.adoc
@@ -25,7 +25,7 @@ Extract the files into the JDK/jre/lib/security folder for whichever version of
 
 == Building
 
-:jdkversion: 17
+:jdkversion: 1.8
 
 === Basic Compile and Test
 
diff --git a/spring-cloud-loadbalancer/src/main/java/org/springframework/cloud/loadbalancer/blocking/client/BlockingLoadBalancerClient.java b/spring-cloud-loadbalancer/src/main/java/org/springframework/cloud/loadbalancer/blocking/client/BlockingLoadBalancerClient.java
index c490a46d..d3af6910 100644
--- a/spring-cloud-loadbalancer/src/main/java/org/springframework/cloud/loadbalancer/blocking/client/BlockingLoadBalancerClient.java
+++ b/spring-cloud-loadbalancer/src/main/java/org/springframework/cloud/loadbalancer/blocking/client/BlockingLoadBalancerClient.java
@@ -95,7 +95,7 @@ public class BlockingLoadBalancerClient implements LoadBalancerClient {
 	public <T> T execute(String serviceId, ServiceInstance serviceInstance, LoadBalancerRequest<T> request)
 			throws IOException {
 		if (serviceInstance == null) {
-			throw new IllegalArgumentException("Service Instance cannot be null");
+			throw new IllegalArgumentException("Service Instance cannot be null, serviceId: " + serviceId);
 		}
 		DefaultResponse defaultResponse = new DefaultResponse(serviceInstance);
 		Set<LoadBalancerLifecycle> supportedLifecycleProcessors = getSupportedLifecycleProcessors(serviceId);