v1: Fix error when using JsonRpcController::getArrayRequest() in a ca…

…ll without params (cherry picked from commit 54dcc8b) # Conflicts: # src/Traits/JsonRpcController.php

src/Traits/JsonRpcController.php

@@ -23,7 +23,7 @@ protected function getArrayRequest()
         if (null === $this->arrayRequest) {
             /** @var JsonRpcRequest $request */
             $request = app('JsonRpcRequest');
-            return ArrayHelper::fromObject($request->call->params);
+            return ArrayHelper::fromObject($request->call->params ?? []);
         }
         return $this->arrayRequest;
     }