diff --git a/app/Models/CourseSign.php b/app/Models/CourseSign.php
index b0ab770..9c6abc0 100755
--- a/app/Models/CourseSign.php
+++ b/app/Models/CourseSign.php
@@ -200,7 +200,7 @@ class CourseSign extends SoftDeletesModel
             }
         }
         $companies = collect($filteredCompanies);
-        dd(Company::whereNotIn('id', $companies->pluck('id'))->get()->toArray());
+        dd($company->whereNotIn('id', $companies->pluck('id'))->get()->toArray());
 
         // 返回结果
         if ($retList) {