Cloud not launch Xamarin.Launcher

Dear all,

I am facing an issue with the launch iOS simulator.

The following image appeared when I tried to debug.

How can I fixed it?

Environment

• macOS Catalina 10.15.4
• Visual Studio for Mac

=== Visual Studio Community 2019 for Mac ===

Version 8.6 (build 4520)
Installation UUID: 436d9f64-9f6a-4a97-8b0c-f1f4848e6080
    GTK+ 2.24.23 (Raleigh theme)
    Xamarin.Mac 6.18.0.23 (d16-6 / 088c73638)

    Package version: 610000104

=== Mono Framework MDK ===

Runtime:
    Mono 6.10.0.104 (2019-12/5d03a6fe116) (64-bit)
    Package version: 610000104

=== Roslyn (Language Service) ===

3.6.0-3.20210.9+4eafdcb1bcbd8d3573f2ba6065e56d9b9ce4f8a3

=== NuGet ===

バージョン: 5.6.0.6591

=== .NET Core SDK ===

SDK: /usr/local/share/dotnet/sdk/3.1.300/Sdks
SDK バージョン: 3.1.300
MSBuild SDK: /Library/Frameworks/Mono.framework/Versions/6.10.0/lib/mono/msbuild/Current/bin/Sdks

=== .NET Core Runtime ===

ランタイム: /usr/local/share/dotnet/dotnet
ランタイム バージョン:
    3.1.4
    2.1.18

=== Xamarin.Profiler ===

バージョン:1.6.15.68
場所: /Applications/Xamarin Profiler.app/Contents/MacOS/Xamarin Profiler

=== Updater ===

バージョン: 11

=== Apple Developer Tools ===

Xcode 11.5 (16139)
Build 11E608c

=== Xamarin.Mac ===

Xamarin.Mac not installed. Can't find /Library/Frameworks/Xamarin.Mac.framework/Versions/Current/Version.

=== Xamarin.iOS ===

Version: 13.18.1.31 (Visual Studio Community)
Hash: b3eedfed9
Branch: d16-6
Build date: 2020-04-09 10:22:36-0400

=== Xamarin Designer ===

Version: 16.6.0.329
Hash: d4f8bcd13
Branch: remotes/origin/d16-6
Build date: 2020-04-24 02:16:02 UTC

=== Xamarin.Android ===

バージョン:10.3.1.0 (Visual Studio Community)
コミット:xamarin-android/d16-6/3fe860a
Android SDK: /Users/toyoshima takumi/Library/Developer/Xamarin/android-sdk-macosx
    サポートされている Android バージョン:
        インストールなし

SDK Tools のバージョン: 26.1.1
SDK プラットフォーム ツールのバージョン: 29.0.5
SDK ビルド ツールのバージョン: 29.0.2

ビルド情報: 
Mono: 165f4b0
Java.Interop: xamarin/java.interop/d16-6@2cab35c
ProGuard: xamarin/proguard/master@905836d
SQLite: xamarin/sqlite/3.31.1@49232bc
Xamarin.Android Tools: xamarin/xamarin-android-tools/d16-6@bfb66f3

=== Microsoft Mobile OpenJDK ===

Java SDK: /Users/toyoshima takumi/Library/Developer/Xamarin/jdk/microsoft_dist_openjdk_1.8.0.25
1.8.0-25
Android Designer EPL のコードは以下から入手できます。
https://github.com/xamarin/AndroidDesigner.EPL

=== Android SDK Manager ===

Version: 16.6.0.50
Hash: 5901879
Branch: remotes/origin/d16-6
Build date: 2020-04-30 04:01:22 UTC

=== Android Device Manager ===

Version: 16.6.0.95
Hash: 45d17b5
Branch: remotes/origin/d16-6
Build date: 2020-04-30 04:01:42 UTC

=== Build Information ===

Release ID: 806004520
Git revision: 9c92c7baceef7771f8dcf5c86e1e1a66fdc26182
Build date: 2020-05-18 10:05:00-04
Build branch: release-8.6
Xamarin extensions: 9c92c7baceef7771f8dcf5c86e1e1a66fdc26182

=== Operating System ===

Mac OS X 10.15.4
Darwin 19.4.0 Darwin Kernel Version 19.4.0
    Wed Mar  4 22:28:40 PST 2020
    root:xnu-6153.101.6~15/RELEASE_X86_64 x86_64