diff --git a/app/Http/Middleware/WebApi.php b/app/Http/Middleware/WebApi.php
index 2f61c6971..c81a5594e 100644
--- a/app/Http/Middleware/WebApi.php
+++ b/app/Http/Middleware/WebApi.php
@@ -52,9 +52,10 @@ class WebApi
 
         // 加密返回内容
         if ($encrypt['client_type'] === 'pgp' && $content = $response->getContent()) {
-            $response->setContent(json_encode([
-                'encrypted' => Doo::pgpEncryptApi($content, $encrypt['client_key'])
-            ]));
+            $content = Doo::pgpEncryptApi($content, $encrypt['client_key']);
+            if($content){
+                $response->setContent(json_encode([ 'encrypted' => $content ]));
+            }
         }
 
         return $response;