add BodyParsingMiddleware because PUT request don't have access on body data

restapi/index.php

@@ -3174,6 +3174,11 @@ $app->addErrorMiddleware(true, true, true);
 
 $app->add(new RestapiCorsMiddleware($container));
 
+/* Without the BodyParsingMiddleware the body of PUT Request will
+ * not be parsed in Slim4
+ */
+$app->addBodyParsingMiddleware();
+
 // Make CORS preflighted request possible
 $app->options('/{routes:.+}', function ($request, $response, $args) {
     return $response;