update

app/Models/CourseSign.php

@@ -311,6 +311,7 @@ class CourseSign extends SoftDeletesModel
         $allInvestedCompanies = Company::whereIn('id', $companyIds)
             ->where('is_yh_invested', 1)
             ->get();
+        dd($allInvestedCompanies);
 
         // 筛选出被投时间在年份范围内的企业
         $companies = [];