gx

@@ -370,7 +370,9 @@ class UpdateSeoTdk extends Command
         $info = $projectOptimizeModel->read(['project_id'=>$project_id],['id','main_keywords']);
         if($info === false){
             $arr = explode(',',$info['main_keywords']);
-            $str = $arr[0];
+            if(isset($arr[0])){
+                $str = $arr[0];
+            }
         }
         return $str;
     }