Django 2.1.14 リリースノートLink to this heading# 2019年11月4日 Django 2.1.14 fixes a regression in 2.1.13. BugfixesLink to this heading# Fixed a crash when using a contains, contained_by, has_key, has_keys, or has_any_keys lookup on JSONField, if the right or left hand side of an expression is a key transform (#30826).