diff --git a/app/Controller/CallBackController.php b/app/Controller/CallBackController.php
index 95fe147..577dd26 100644
--- a/app/Controller/CallBackController.php
+++ b/app/Controller/CallBackController.php
@@ -1711,12 +1711,12 @@ class CallBackController extends AbstractController
      */
     public function trtcCallBack(): ResponseInterface
     {
-        $request_params = $this->request->getBody()->getContents();
-        $SdkAppId = $this->request->header("SdkAppId");
-        $Sign = $this->request->header("Sign");
-        $Sign = stripslashes($Sign);
-
         try {
+            $request_params = $this->request->getBody()->getContents();
+            $SdkAppId = $this->request->header("SdkAppId");
+            $Sign = $this->request->header("Sign");
+            $Sign = stripslashes($Sign);
+
             Log::getInstance("CallBackController-trtcCallBack")->info(json_encode($request_params, JSON_UNESCAPED_UNICODE));
 
             if (empty($SdkAppId)) {