每当我尝试在本地sql服务器上导入BACPAC时，我都会收到以下错误消息：
TITLE: Microsoft SQL Server Management Studio
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Could not import package.
Warning SQL0: The source contains users that rely on an external authentication provider that is not supported by the target. These users will be treated as users without logins.
Warning SQL72012: The object [DB_NAME_Data] exists in the target, but it will not be dropped even though you selected the 'Generate drop statements for objects that are in the target database but that are not in the source' check …