Ford Guo

TypeError: cannot pickle '_io.TextIOWrapper' object

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my env:mac os ,python3.8.5,django 3.1 exception: `File "/Users/ford/workspace/products/ve/.venv/lib/python3.8/site-packages/django/core/management/base.py", line 371, in execute output = self.handle(*args, **options) File "/Users/ford/workspace/products/ve/.venv/lib/python3.8/site-packages/chroniker/management/commands/cron.py", line 342, in handle run_cron( File "/Users/ford/workspace/products/ve/.venv/lib/python3.8/site-packages/chroniker/management/commands/cron.py", line 214, in run_cron proc.start()...

When `bucket_acl` is private,the "/" will replace with "%2F". More detail:https://help.aliyun.com/document_detail/32033.htm?spm=a2c4g.11186623.0.0.5be81c91WNZR7k#concept-32033-zh

"Can not convert multiple-column properties" with composite column

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[Use the sqlalchemy example](http://docs.sqlalchemy.org/en/latest/orm/composites.html): start = composite(Point, x1, y1) This will reproduce the warning `flask_admin/contrib/sqla/view.py:426: UserWarning: Can not convert multiple-column properties `