[英]Datastore entity with kind and key has a null property named
After adding a boolean attribute to an object, fetching that object from the datastore results in the error: 向对象添加布尔属性后,从数据存储区中提取该对象会导致错误:
Datastore entity with kind <Class> and key <Class:ID> has a
null property named <attribute>
Don't use primitive data-types, use their wrapper classes. 不要使用原始数据类型,使用它们的包装类。
Instead of boolean, use Boolean, etc. 而不是布尔值,使用布尔值等。
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