Added Exception in the ClientHttpResponse

Author: ssayyaparaj

src/main/java/com/intuit/springwebclient/entity/ClientHttpResponse.java

@@ -10,7 +10,7 @@ public final class ClientHttpResponse<T>{
 
     private final T response;
     private final String error;
-    private final Exception exception;
+    private final Throwable exception;
     private final HttpStatusCode status;
     private final boolean isSuccess2xx;