Error compiling my project

Someone can help me fix these errors, I found several places citing this error, but nothing works, I've been trying to fix it for a week:

C:\Users\DEV005\.gradle\caches\transforms-1\files-1.1\appcompat-v7-28.0.0-alpha1.aar848053fe321f69e8475a1f12a2682e\res\values-v28\values-v28.xml
Error:(9, 5) error: resource android:attr/dialogCornerRadius not found.
C:\Users\DEV005\.gradle\caches\transforms-1\files-1.1\appcompat-v7-28.0.0-alpha1.aar848053fe321f69e8475a1f12a2682e\res\values\values.xml
Error:(1452, 5) error: resource android:color/button_material_light is private.
Error:(252, 5) error: resource android:attr/fontVariationSettings not found.
Error:(252, 5) error: resource android:attr/ttcIndex not found.
D:\GitHub\KwikView-master\app\build\intermediates\incremental\mergeDebugResources\merged.dir\values-v28\values-v28.xml
Error:(11) error: resource android:attr/dialogCornerRadius not found.
Error:(7) resource android:attr/dialogCornerRadius not found.
Error:(11) resource android:attr/dialogCornerRadius not found.
D:\GitHub\KwikView-master\app\build\intermediates\incremental\mergeDebugResources\merged.dir\values\values.xml
Error:(1881) resource android:color/button_material_light is private.
Error:(298) resource android:attr/fontVariationSettings not found.
Error:(298) resource android:attr/ttcIndex not found.
Error:failed linking references.

This project was initially developed in eclipse and I migrated it to android-studio, but I believe that something is still missing.

Extra

I still have 3 libraries and one of them also has this error, so I think it's something of a configuration:

apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    buildToolsVersion '26.0.2'

    defaultConfig {
        applicationId "com.demo"
        minSdkVersion 14
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:+'
    compile 'org.altbeacon:android-beacon-library:2+'
    compile 'com.google.android.gms:play-services:7.8.0'
    compile 'me.dm7.barcodescanner:zxing:1.8.1'
    compile files('libs/android-query-full.0.26.7.jar')
}