diff --git a/app/Services/DeviceWarningService.php b/app/Services/DeviceWarningService.php
index 2c9b2a2..189d7e0 100644
--- a/app/Services/DeviceWarningService.php
+++ b/app/Services/DeviceWarningService.php
@@ -23,14 +23,15 @@ class DeviceWarningService
         }
 
         $rule = settings()->get($slug);
-
-        foreach($rule as $lv => $rule){
-            $res = $this->verifyRule($rule, $log);
-            if($res && $res['status']){
-                $this->inLog($device, $reportedAt, $log, $lv, $res['keys']);
+        
+        if($rule){
+            foreach($rule as $lv => $rule){
+                $res = $this->verifyRule($rule, $log);
+                if($res && $res['status']){
+                    $this->inLog($device, $reportedAt, $log, $lv, $res['keys']);
+                }
             }
         }
-
         return ;
     }