From 810b2ace0a9cb2511cf0ef6f0c01f70a0ce11915 Mon Sep 17 00:00:00 2001
From: zsloan
Date: Thu, 12 Aug 2021 23:19:38 +0000
Subject: Return empty list instead of None in get_study_samplelists

---
 wqflask/base/data_set.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wqflask/base/data_set.py b/wqflask/base/data_set.py
index 1042e1bd..0ea61faa 100644
--- a/wqflask/base/data_set.py
+++ b/wqflask/base/data_set.py
@@ -403,7 +403,7 @@ class DatasetGroup:
         try:
             f = open(study_sample_file)
         except:
-            return None
+            return []
         study_samples = json.load(f)
         return study_samples
 
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