修改

app/api/controller/User.php

@@ -665,7 +665,7 @@ class User extends BaseController
         if($res["code"]!=1){
             return app('json')->fail($res["msg"]);
         }
-        (new UserModel)->where("uid","")->update(["invite_img"=>$res["url"]]);
+        (new UserModel)->where("uid",$request->user["uid"])->update(["invite_img"=>$res["url"]]);
         return app('json')->success(["qrcode"=>$res["url"],"bgimg"=>$bgimg]);
     }