diff --git a/app/Http/Controllers/Mobile/CourseController.php b/app/Http/Controllers/Mobile/CourseController.php
index 53b371b..d755999 100755
--- a/app/Http/Controllers/Mobile/CourseController.php
+++ b/app/Http/Controllers/Mobile/CourseController.php
@@ -588,8 +588,8 @@ class CourseController extends CommonController
             'course_content_id' => $all['course_content_id'],
             'course_id' => $courseContent->course_id,
             'user_id' => $this->getUserId(),
-            'longitude' => $all['longitude'],
-            'latitude' => $all['latitude'],
+            'longitude' => $all['longitude']??'',
+            'latitude' => $all['latitude']??'',
         ]);
         // 同日期课程批量签到
         $batch_sign = request('batch_sign', 0);