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-rw-r--r--wqflask/base/trait.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/wqflask/base/trait.py b/wqflask/base/trait.py
index 57cc8a9b..c275083d 100644
--- a/wqflask/base/trait.py
+++ b/wqflask/base/trait.py
@@ -378,7 +378,8 @@ def jsonable(trait, dataset=None):
def retrieve_trait_info(trait, dataset, get_qtl_info=False):
- assert dataset, "Dataset doesn't exist"
+ if not dataset:
+ raise ValueError("Dataset doesn't exist")
resource_id = get_resource_id(dataset, trait.name)
if dataset.type == 'Publish':