[Bug] Sqllab -> Explore -> Bar Chart

[hughhhh]

When users write a query and then move to the explore view, the table view reders but once they try to click a Bar Chart - Distribution type viz the explore blanks out. The only way to get back the current state is copying the link and reloading the page.

Steps to Reproduce:

1. Goto sqllab
2. Run the query
3. Click Explore btn
4. Change viz type to 'Distribution Bar Chart`
5. Set metrics = SUM(ride_count) and series = 'venue_name`

StackTrack:
{“error”: “The datasource associated with this chart no longer exists”, “stacktrace”: “Traceback (most recent call last):\n File \“/srv/venvs/service/trusty/service_venv_python3.6/lib/python3.6/site-packages/superset/views/core.py\“, line 1158, in explore_json\n datasource_id, datasource_type, form_data)\n File \“/srv/venvs/service/trusty/service_venv_python3.6/lib/python3.6/site-packages/superset/views/core.py\“, line 1217, in datasource_info\n ‘The datasource associated with this chart no longer exists’)\nException: The datasource associated with this chart no longer exists\n”}

[iamnewneo]

I am also facing the same issue. How can we solve this? @hughhhh did you find any hack for this?

[mrshu]

I also ran into this today. @hughhhh @iamnewneo do you happen to have any way of mitigating this problem? Could it be in nay way related to #5019?

Thanks!

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