Android Question AndroidX SDK Error after installing some items

SDK Error said:

1. Open Tools - B4A Sdk manager.
2. Install all recommended items. This will make the switch to AndroidX. You can always go back to the previous SDK.

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Loading package information... Loading local repository... Info: Parsing C:\Android-SDK\build-tools\27.0.1\package.xml
Info: Parsing C:\Android-SDK\emulator\package.xml
Info: Parsing C:\Android-SDK\extras\google\usb_driver\package.xml
Info: Parsing C:\Android-SDK\extras\intel\Hardware_Accelerated_Execution_Manager\package.xml
Info: Parsing C:\Android-SDK\patcher\v4\package.xml
Info: Parsing C:\Android-SDK\platform-tools\package.xml
Info: Parsing C:\Android-SDK\platforms\android-28\package.xml
Info: Parsing C:\Android-SDK\tools\package.xml
....
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Unzipping... android-9/dx.bat
Info: "Install Android SDK Build-Tools 28.0.3 (revision: 28.0.3)" complete.
[=======================================] 100%

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/C:/Android-SDK/tools/bin/jaxb-impl-2.1.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

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