diff --git a/src/Request/Batch.php b/src/Request/Batch.php
index 3a6d33d..c4eb652 100644
--- a/src/Request/Batch.php
+++ b/src/Request/Batch.php
@@ -94,7 +94,7 @@ public function appendQueryId($queryId, array $values = []) {
      * @param array $options
      * @return string
      */
-    public static function queryParameters($consistency, array $options = []){
+    public static function queryParameters($consistency, array $options = [], array $values = []){
         $flags = 0;
         $optional = '';
     
diff --git a/src/Response/Error.php b/src/Response/Error.php
index 175d661..1427fbb 100644
--- a/src/Response/Error.php
+++ b/src/Response/Error.php
@@ -123,6 +123,6 @@ public function getData() {
 	 */
 	public function getException(){
 		$data = $this->getData();
-		return new Exception($data['message'], $data['code']);
+		return new \Exception($data['message'], $data['code']);
 	}
 }
diff --git a/src/Type/Uuid.php b/src/Type/Uuid.php
index d67b967..261988d 100644
--- a/src/Type/Uuid.php
+++ b/src/Type/Uuid.php
@@ -22,7 +22,10 @@ public static function binary($value){
     }
     
     public static function parse($binary){
-        $unpacked = unpack('n8', $binary);
-        return sprintf('%04x%04x-%04x-%04x-%04x-%04x%04x%04x', $unpacked[1], $unpacked[2], $unpacked[3], $unpacked[4], $unpacked[5], $unpacked[6], $unpacked[7], $unpacked[8]);
+        if($binary) {
+            $unpacked = unpack('n8', $binary);
+            return sprintf('%04x%04x-%04x-%04x-%04x-%04x%04x%04x', $unpacked[1], $unpacked[2], $unpacked[3], $unpacked[4], $unpacked[5], $unpacked[6], $unpacked[7], $unpacked[8]);
+        }
+        return "";
     }
 }