W: 无法下载 http://packages.linuxdeepin.com/deepin/ ... /InRelease  Unable to find expected entry 'main/binary-i386sudo/Packages' in Release file (Wrong sources.list entry or malformed file)

W: 无法下载 http://packages.linuxdeepin.com/ubuntu/ ... ty/Release  Unable to find expected entry 'main/binary-i386sudo/Packages' in Release file (Wrong sources.list entry or malformed file)

W: 无法下载 http://packages.linuxdeepin.com/ubuntu/ ... ty/Release  Unable to find expected entry 'main/binary-i386sudo/Packages' in Release file (Wrong sources.list entry or malformed file)

W: 无法下载 http://packages.linuxdeepin.com/ubuntu/ ... es/Release  Unable to find expected entry 'main/binary-i386sudo/Packages' in Release file (Wrong sources.list entry or malformed file)

E: Some index files failed to download. They have been ignored, or old ones used instead.
是怎么回事，应该怎么办，