update

app/Models/CourseSign.php

@@ -357,7 +357,7 @@ class CourseSign extends SoftDeletesModel
     public static function rencai($start_date = null, $end_date = null, $course_ids = null, $retList = false)
     {
         $courseSignsQuery = self::getStudentList($start_date, $end_date, 1, $course_ids);
-        $courseSigns = $courseSignsQuery->whereHas('course', function ($query) use ($start_date, $end_date) {
+        $courseSigns = $courseSignsQuery->whereHas('course', function ($query) {
             $query->where('typeDetail', function ($q) {
                 $q->where('name', '人才培训');
             });
@@ -367,7 +367,6 @@ class CourseSign extends SoftDeletesModel
         } else {
             return User::whereIn('id', $courseSigns->pluck('user_id'))->count();
         }
-
     }
 
     /**