blcksrx opened a new issue #8396: pyarrow does not know how to serialize objects of type URL: https://github.com/apache/incubator-superset/issues/8396 `sql_lab` and also `visualization` doesn't work because of `pyarrow` can't serialize objects ### Expected results return query result ### Actual results ``` pyarrow does not know how to serialize objects of type <class 'pandas.core.arrays.integer.IntegerArray'>. ``` #### Screenshots  #### How to reproduce the bug 1. Go to `sql_lab` 2. Run a query like `SELECT *` 4. See error ### Environment - superset version: `branch master on 2019-10-12 18:38` - python version: `3.7` - node.js version: `10.16.3` - npm version: `6.9.0` ### Checklist Make sure these boxes are checked before submitting your issue - thank you! - [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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