Q: Failed to resolve: firebaseui-android.internal:lintchecks:unspecified I got message:

Failed to resolve: firebaseui-android.internal:lintchecks:unspecified 

when I add implementation 'com.firebaseui:firebase-ui-auth:3.2.0' on dependencies. 
How to solve them?
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'

compile 'com.android.support:design:24.2.0'
compile 'com.android.support:appcompat-v7:24.2.0'

// Displaying images
compile 'com.github.bumptech.glide:glide:3.6.1'
compile 'com.google.firebase:firebase-core:11.8.0'
compile 'com.google.firebase:firebase-database:11.8.0'
compile 'com.google.firebase:firebase-auth:11.8.0'
implementation 'com.firebaseui:firebase-ui-auth:3.2.0'
}
apply plugin: 'com.google.gms.google-services'


A: Update:  Fixed in release 3.2.1.
This problem was logged as a FirebaseUI issue yesterday.  The recommended workaround is:
compile('com.firebaseui:firebase-ui-auth:3.2.0') {
    exclude module: 'lintchecks'
}


A: I had also the exact problem as you do, 2 hours ago and I fixed it by changing this line of code:
implementation 'com.firebaseui:firebase-ui-auth:3.2.0'

with
implementation 'com.firebaseui:firebase-ui-auth:3.1.3'

See here. The last version 3.2.0 did not work for me either.
