handle None

Author: matt-bernstein

label_studio/io_storages/base_models.py

@@ -347,15 +347,15 @@ def add_task(cls, project, maximum_annotations, max_inner_id, storage, link_para
         data = link_kwargs.pop('task_data')
 
         # predictions
-        predictions = data.get('predictions', [])
+        predictions = data.get('predictions') or []
         if predictions:
             if 'data' not in data:
                 raise ValueError(
                     'If you use "predictions" field in the task, ' 'you must put "data" field in the task too'
                 )
 
         # annotations
-        annotations = data.get('annotations', [])
+        annotations = data.get('annotations') or []
         cancelled_annotations = 0
         if annotations:
             if 'data' not in data: