警告：未找到带有密钥模拟器的依赖包！警告：无法计算完整的依赖项列表

如何解决警告：未找到带有密钥模拟器的依赖包！警告：无法计算完整的依赖项列表

每当尝试通过 sdk 管理器安装任何构建工具时，我都会遇到以下问题。请帮助解决问题。[sdk 命令行][windows 7]

Microsoft Windows [Version 6.1.7601]
copyright (c) 2009 Microsoft Corporation.  All rights reserved.

C:\Users\Admin>sdkmanager "build-tools;27.0.0"
Warning: Dependant package with key emulator not found!
Warning: Unable to compute a complete list of dependencies.
[===                                    ] 10% Computing updates...
C:\Users\Admin>

当我尝试 sdkmanager emulator 或 sdkmanager "emulator"

Microsoft Windows [Version 6.1.7601]
copyright (c) 2009 Microsoft Corporation.  All rights reserved.

C:\Users\Admin>sdkmanager emulator
Warning: Failed to find package 'emulator'
[===                                    ] 10% Computing updates...
C:\Users\Admin>