Google and Firebase dependencies not resolving after Android Studio update [duplicate] - firebase

Question

This question already has answers here:
Failed to resolve: com.google.firebase:firebase-core:11.2.0
(6 answers)
Closed 5 years ago.
I recently updated Android studio from 2.1 to 2.3.3 on Ubuntu 17.04. Additionally, I had to update my android.support dependencies from version 25.0.0 to 26.0.1 and my firebase dependencies from 9.6.1 to 11.2.0. I have tried everything on SO to no avail, including completely re-imaging ubuntu. All google/firebase dependencies still fail to resolve so It must be an error on my side. Below are my gradle files.
Module build.gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 26
buildToolsVersion "26.0.1"
defaultConfig {
applicationId "me.myapp.app"
minSdkVersion 15
targetSdkVersion 26
versionCode 10
versionName "0.10.1"
}
buildTypes {
release {
shrinkResources true
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android.txt'),
'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:26.0.1'
compile 'com.android.support:support-v4:26.0.1'
compile 'com.android.support:design:26.0.1'
compile 'com.google.firebase:firebase-core:11.2.0'
compile 'com.google.firebase:firebase-database:11.2.0'
compile 'com.google.firebase:firebase-auth:11.2.0'
compile 'com.google.firebase:firebase-crash:11.2.0'
compile 'com.google.firebase:firebase-storage:11.2.0'
compile 'com.google.firebase:firebase-messaging:11.2.0'
compile 'com.facebook.android:facebook-android-sdk:[4,5)'
compile 'com.github.amlcurran.showcaseview:library:5.4.3'
}
apply plugin: 'com.google.gms.google-services'
Project build.gradle
buildscript {
repositories {
jcenter()
mavenCentral()
}
dependencies {
classpath 'com.android.tools.build:gradle:2.3.3'
classpath 'com.google.gms:google-services:3.1.0'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}

Answer 1

try to add
maven {
url "https://maven.google.com"
}
after jcenter() like below
allprojects {
repositories {
jcenter()
maven {
url "https://maven.google.com"
}
}
}