diff --git a/app/Services/Pacs/StudyImporter.php b/app/Services/Pacs/StudyImporter.php
index f6e107b..c449fb7 100644
--- a/app/Services/Pacs/StudyImporter.php
+++ b/app/Services/Pacs/StudyImporter.php
@@ -146,7 +146,7 @@ private function prepareData(mixed $orthanc_src): array
         ];
 
         $series = [];
-        foreach ($orthanc_src['Series'] as $ser) {
+        foreach (data_get($orthanc_src, 'Series', []) as $ser) {
             $params = [
                 'orthanc_uid' => strtolower($ser['ID']),
                 'series_instance_uid' => data_get($ser, 'MainDicomTags.SeriesInstanceUID'),
@@ -198,12 +198,12 @@ private function updateStudy(int $row_id, mixed $study): void
     private function insertStudy(mixed $study): void
     {
         $data = $this->prepareData($study);
-        $study = Study::create($data['study']);
-        $data['details']['study_id'] = $study->id;
+        $row = Study::create($data['study']);
+        $data['details']['study_id'] = $row->id;
         StudyDetails::create($data['details']);
 
         foreach ($study['series'] as $series) {
-            $series['study_id'] = $study->id;
+            $series['study_id'] = $row->id;
             DB::table('study_series')->insert($series);
         }
     }