Xcode 10.2未针对iOS 12.3 Beta 1构建

Question

我将iPhone更新为12.3 beta1。但是显然它引发了错误

 This iPhone 7 (Model 1660, 1778, 1779, 1780) is running iOS 12.3
 (16F5117h), which may not be supported by this version of Xcode.

此外，Apple开发人员门户网站上没有任何Xcode Beta可供下载。