vermilioncity opened a new issue #15453:
URL: https://github.com/apache/superset/issues/15453
In 1.3, when you click on "Export Dashboard", the app loads interminably and
never downloads the JSON.
This functionality worked in 1.2. It's worth noting that 1.3 has an
additional parameter with the endpoint it is hitting (`token`), that was not
there in previous versions.
Also, if you hit the API endpoint directly, e.g.,
`http://<domain_name>.com/api/v1/dashboard/export/?q=[6,7]`, exports work as
expected.
### Expected results
The dashboard should be downloaded almost instantaneously as a JSON.
### Actual results
The app has the loading icon interminably and never downloads.
Logs when I attached to the container:
```
2021-06-29 14:54:53,420:ERROR:root:the JSON object must be str, bytes or
bytearray, not NoneType
Traceback (most recent call last):
File
"/usr/local/lib/python3.7/site-packages/flask_appbuilder/api/__init__.py", line
85, in wraps
return f(self, *args, **kwargs)
File "/app/superset/views/base_api.py", line 85, in wraps
raise ex
File "/app/superset/views/base_api.py", line 82, in wraps
duration, response = time_function(f, self, *args, **kwargs)
File "/app/superset/utils/core.py", line 1416, in time_function
response = func(*args, **kwargs)
File
"/usr/local/lib/python3.7/site-packages/flask_appbuilder/api/__init__.py", line
155, in wraps
return f(self, *args, **kwargs)
File "/app/superset/utils/log.py", line 228, in wrapper
value = f(*args, **kwargs)
File "/app/superset/dashboards/api.py", line 743, in export
export = Dashboard.export_dashboards(ids)
File "/app/superset/models/dashboard.py", line 338, in export_dashboards
json_metadata = json.loads(dashboard.json_metadata)
File "/usr/local/lib/python3.7/json/__init__.py", line 341, in loads
raise TypeError(f'the JSON object must be str, bytes or bytearray, '
TypeError: the JSON object must be str, bytes or bytearray, not NoneType
```
#### Screenshots
1.3 (does not work)
1.2 (works correctly)
#### How to reproduce the bug
1. Go to https://<domain>/dashboard/list/
2. Create dashboard
3. Click on export
4. Watch it load interminably :(
(Issue also exists on dashboards with charts in them and the like, but
wanted to make sure it wasn't my dashboard that was the issue.)
### Environment
- superset version: 1.3
- python version: Python 3.7.9
- node.js version: 14
### Checklist
- [ x ] I have checked the superset logs for python stacktraces and included
it here as text if there are any.
- [ x ] I have reproduced the issue with at least the latest released
version of superset.
- [ x ] I have checked the issue tracker for the same issue and I haven't
found one similar.
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