Appium启动服务报错

错误信息如下：

error: Could not find a device to launch. You requested 'iPhone 6 (8.4)', but the available devices were: ["iPad 2 (9.3) [D9ACBD66-90B7-4457-8FEB-36A6EC0288C1] (Simulator)","iPad Air (9.3) [9C4C4EED-F452-4849-B5D7-5CA7BB518304] (Simulator)","iPad Air 2 (9.3) [77D050AC-E743-431A-A3C9-142FB5C2331B] (Simulator)","iPad Pro (9.3) [4B79E455-37C3-43B3-B06B-0F72771A2409] (Simulator)","iPad Retina (9.3) [79477543-3B76-4B36-811D-9A11868AF315] (Simulator)","iPhone 4s (9.3) [48978E90-416B-4FEF-93B8-9F1B561D7D84] (Simulator)","iPhone 5 (9.3) [C1F6DFD0-8358-48DC-85FB-64FAA186AFA1] (Simulator)","iPhone 5s (9.3) [25C0BC85-DEAB-448D-AAAC-468A443BE817] (Simulator)","iPhone 6 (9.3) [E535C7BE-19EA-4CE2-9326-8123F9617C87] (Simulator)","iPhone 6 Plus (9.3) [D60014BC-77BC-48E2-A374-9AD8A7DB41E9] (Simulator)","iPhone 6s (9.3) [3D638B3D-0C5F-48B1-8773-8C948FA787C3] (Simulator)","iPhone 6s (9.3) + Apple Watch - 38mm (2.2) [1BEC5616-0CAE-4CC4-A838-390DBFE52897] (Simulator)","iPhone 6s Plus (9.3) [781B8734-FA6B-4640-AB1E-B67E06DA9A83] (Simulator)","iPhone 6s Plus (9.3) + Apple Watch - 42mm (2.2) [5B5C4585-37BD-4781-8235-8EB9342EB2B7] (Simulator)"]

 

解决方法：