Microsoft.aspnetcore.app没有用于指定的Runtime Indentifier＆＃x27; ios-Arm64＆＃x27; App。
我正在使用VS Enterprise 17.3 Preview 1，但我的试验正在到期，因此我下载并安装了社区17.3 Preview 1。我打开了MAUI Project and Build and Build，并且收到了此错误；
There was no runtime pack for Microsoft.AspNetCore.App available for the specified RuntimeIdentifier 'maccatalyst-x64
我假设我一定错过了安装中的东西，所以我回去，但是所有相关组件均已安装
我与Enterprise安装仔细检查，它们匹配。然后，我回去打开VS Enterprise的项目，现在我在那里也会遇到相同的错误！
我尝试删除bin/obj文件夹清洁和重建； 我尝试将其添加到.csproj中，
<GenerateErrorForMissingTargetingPacks>false</GenerateErrorForMissingTargetingPacks>
我尝试从此更改目标帧工程：
<TargetFrameworks>net6.0-android;net6.0-ios;net6.0-maccatalyst</TargetFrameworks>
<TargetFrameworks Condition="$([MSBuild]::IsOSPlatform('windows'))">$(TargetFrameworks);net6.0-windows10.0.19041.0</TargetFrameworks>
对此（以及其他一些组合）：
<TargetFrameworks>net6.0-android;</TargetFrameworks>
<TargetFrameworks Condition="$([MSBuild]::IsOSPlatform('windows'))">$(TargetFrameworks);net6.0-windows10.0.19041.0</TargetFrameworks>
因此，我现在无法构建:(帮助pls
I was using VS Enterprise 17.3 preview 1 but my trial was expiring so I download and installed VS Community 17.3 preview 1. I open my MAUI project and build and I get this error;
There was no runtime pack for Microsoft.AspNetCore.App available for the specified RuntimeIdentifier 'maccatalyst-x64
I assume I must've missed something in the installation so I go back but all the relevant components are installed 
I double check with the Enterprise installation and they match. I then go back to opening the project in VS Enterprise and now I get the same error there too!?
I've tried deleting bin/obj folders cleaning and rebuilding;
I've tried adding this to the .csproj
<GenerateErrorForMissingTargetingPacks>false</GenerateErrorForMissingTargetingPacks>
I've tried changing the TargetFrameworks from this:
<TargetFrameworks>net6.0-android;net6.0-ios;net6.0-maccatalyst</TargetFrameworks>
<TargetFrameworks Condition="$([MSBuild]::IsOSPlatform('windows'))">$(TargetFrameworks);net6.0-windows10.0.19041.0</TargetFrameworks>
To this (and a few other combinations):
<TargetFrameworks>net6.0-android;</TargetFrameworks>
<TargetFrameworks Condition="$([MSBuild]::IsOSPlatform('windows'))">$(TargetFrameworks);net6.0-windows10.0.19041.0</TargetFrameworks>
So I'm now stuck unable to build :( help pls
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事实证明，我在大火文件中遇到了一个错误，即编译器没有引用。 “无运行时包”错误是红鲱鱼，与实际错误无关。
Turns out I had an error in a blazor file that the compiler wasn't referencing. The 'no runtime pack' error was a red herring and unrelated to the actual error.