after install, reports error about 'meta'

[vongoethe]

INFO:cocktail.core.database:Updating model data for period: Year
Traceback (most recent call last):
File "D:\Work\cocktail\venv\lib\site-packages\cocktail\core\providers\model_data.py", line 52, in
reply.finished.connect(lambda: self.onRequestFinished(reply))
File "D:\Work\cocktail\venv\lib\site-packages\cocktail\core\providers\model_data.py", line 76, in onRequestFinished
self.queue.put(data_classes.deserialise_items(items))
File "D:\Work\cocktail\venv\lib\site-packages\cocktail\core\database\data_classes.py", line 67, in deserialise_items
model, model_versions, model_files, model_images = items_from_model_json(
File "D:\Work\cocktail\venv\lib\site-packages\cocktail\core\database\data_classes.py", line 49, in items_from_model_json
version, version_files, version_images = items_from_model_version(version_data)
File "D:\Work\cocktail\venv\lib\site-packages\cocktail\core\database\data_classes.py", line 34, in items_from_model_version
images = [
File "D:\Work\cocktail\venv\lib\site-packages\cocktail\core\database\data_classes.py", line 35, in
ModelImage.from_json(version.model_id, version.id, image)
File "D:\Work\cocktail\venv\lib\site-packages\cocktail\core\database\data_classes.py", line 201, in from_json
metadata = data["meta"] or {}
KeyError: 'meta'

after installed
it outputs these.
i've copied databse from release database.zip
thank you