fixed errors in new schedule, re #4421

Merge request studip/studip!3757

1 files changed, 1 insertions, 1 deletions

diff --git a/db/migrations/6.0.35_new_schedule_improvements.php b/db/migrations/6.0.35_new_schedule_improvements.php
index 4b14785..13708f5 100644
--- a/db/migrations/6.0.35_new_schedule_improvements.php
+++ b/db/migrations/6.0.35_new_schedule_improvements.php
@@ -49,7 +49,7 @@ class NewScheduleImprovements extends Migration
                     'end_time'   => sprintf('%02u:00', $old_config['glb_end_time']),
                     'semester_id' => $old_config['semester_id'] ?? $old_config['glb_sem'] ?? null,
                 ];
-                if (count($old_config['glb_days']) === 7) {
+                if (!empty($old_config['glb_days']) && count($old_config['glb_days']) === 7) {
                     $new_config['weekdays'] = 7;
                 } else {
                     $new_config['weekdays'] = 5;