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在谷歌搜索了很多之后,我来到stackoverflow 如何调试这个错误
当我尝试从 Web 客户端创建新字段时出现此错误
AttributeError:“NoneType”对象没有属性“_columns”
当您没有为模块提供正确的依赖项时,通常会出现此错误。请检查您是否在__openerp__.py文件中提供了正确的依赖项
__openerp__.py