fixes #48

Author: matthewjwbyrne

Examples/example-1-your-first-request.php

@@ -96,4 +96,4 @@
  * 
  */
 
-echo $whoAmI->firstname . ' ' . $whoAmI->lastname;
+echo $whoAmI->firstname . ' ' . $whoAmI->lastname;

src/PrintNode/Entity.php

@@ -102,9 +102,9 @@ public function mapValuesFromJson($json)
      * 
      * @return string
      */
-    public function jsonSerialize(): mixed
+   #[\ReturnTypeWillChange]
+   public function jsonSerialize()
     {
-        
         $json = array();
 
         foreach (static::$responseMap as $responseKey => $responseMapType) {
@@ -132,4 +132,4 @@ public function __toString() {
 
     }
 
-}
+}

src/PrintNode/EntityDynamic.php

@@ -52,7 +52,8 @@ public function mapValuesFromJson($json)
      * 
      * @return string
      */
-    public function jsonSerialize(): mixed
+    #[\ReturnTypeWillChange]
+    public function jsonSerialize()
     {
 
         $refClass = new \ReflectionClass($this);
@@ -75,4 +76,4 @@ public function jsonSerialize(): mixed
 
     }
 
-}
+}