update

app/Models/CourseSign.php

@@ -193,12 +193,11 @@ class CourseSign extends SoftDeletesModel
         $companies = Company::whereHas('users', function ($query) use ($userIds) {
             $query->whereIn('id', $userIds);
         })->where('is_yh_invested', 1)->get();
-
         // 自定义时间：需要按被投时间筛选
         if (!$isDefaultDate) {
             $startDate = substr($start_date, 0, 10);
             $endDate = substr($end_date, 0, 10);
-
+            dd($startDate, $endDate);
             // 筛选出被投时间在范围内的企业
             $filteredCompanies = [];
             foreach ($companies as $company) {