Miscellaneous Errors when synchronizing Gradle

I'm getting the following error when syncing my gradle. I can not understand the cause, nor do I know how to correct it. Somebody help me please, I'm a beginner.

Android resource linking failed
Output:  C:\Users\alexi\AndroidStudioProjects\DicRegBr\app\build\intermediates\incremental\mergeDebugResources\merged.dir\values-v28\values-v28.xml:7: error: resource android:attr/dialogCornerRadius not found.
C:\Users\alexi\AndroidStudioProjects\DicRegBr\app\build\intermediates\incremental\mergeDebugResources\merged.dir\values-v28\values-v28.xml:11: error: resource android:attr/dialogCornerRadius not found.
C:\Users\alexi\AndroidStudioProjects\DicRegBr\app\build\intermediates\incremental\mergeDebugResources\merged.dir\values\values.xml:604: error: resource android:attr/fontVariationSettings not found.
C:\Users\alexi\AndroidStudioProjects\DicRegBr\app\build\intermediates\incremental\mergeDebugResources\merged.dir\values\values.xml:604: error: resource android:attr/ttcIndex not found.
error: failed linking references.

Command: C:\Users\alexi\.gradle\caches\transforms-1\files-1.1\aapt2-3.2.0-alpha16-4748712-windows.jare51535f669861b12454a98afbe5a038\aapt2-3.2.0-alpha16-4748712-windows\aapt2.exe link -I\
        C:\Users\alexi\AppData\Local\Android\Sdk\platforms\android-27\android.jar\
        --manifest\
        C:\Users\alexi\AndroidStudioProjects\DicRegBr\app\build\intermediates\merged_manifests\debug\processDebugManifest\merged\AndroidManifest.xml\
        -o\
        C:\Users\alexi\AndroidStudioProjects\DicRegBr\app\build\intermediates\processed_res\debug\processDebugResources\out\resources-debug.ap_\
        -R\
        @C:\Users\alexi\AndroidStudioProjects\DicRegBr\app\build\intermediates\incremental\processDebugResources\resources-list-for-resources-debug.ap_.txt\
        --auto-add-overlay\
        --java\
        C:\Users\alexi\AndroidStudioProjects\DicRegBr\app\build\generated\not_namespaced_r_class_sources\debug\processDebugResources\r\
        --custom-package\
        com.alk.dicregbr\
        -0\
        apk\
        --output-text-symbols\
        C:\Users\alexi\AndroidStudioProjects\DicRegBr\app\build\intermediates\symbols\debug\R.txt\
        --no-version-vectors
Daemon:  AAPT2 aapt2-3.2.0-alpha16-4748712-windows Daemon #0