Android Studio: Gradle sync failed: Could not HEAD '...'. Received status code 502 from server: Bad Gateway [closed]

After update Android Studio to latest version (3.1) and gradle version in my project I get an error (the link is always different):

12:54   Gradle sync started

12:56   Gradle sync failed: Could not HEAD 'https://jcenter.bintray.com/com/android/tools/analytics-library/shared/26.1.0/shared-26.1.0.jar'. Received status code 502 from server: Bad Gateway             Consult IDE log for more details (Help | Show Log) (1m 56s 602ms)

12:56   Gradle sync started

12:57   Gradle sync failed: Could not HEAD 'https://jcenter.bintray.com/org/codehaus/mojo/animal-sniffer-parent/1.14/animal-sniffer-parent-1.14.pom'. Received status code 502 from server: Bad Gateway             Consult IDE log for more details (Help | Show Log) (1m 4s 266ms)

12:58   Gradle sync started

12:59   Gradle sync failed: Could not HEAD 'https://jcenter.bintray.com/com/sun/activation/all/1.2.0/all-1.2.0.pom'. Received status code 502 from server: Bad Gateway          Consult IDE log for more details (Help | Show Log) (1m 29s 985ms)

13:01   Gradle sync started

13:02   Gradle sync failed: Could not HEAD 'https://jcenter.bintray.com/com/sun/activation/javax.activation/1.2.0/javax.activation-1.2.0.pom'. Received status code 502 from server: Bad Gateway            Consult IDE log for more details (Help | Show Log) (4s 976ms)

Android Studio version:

Android Studio 3.1
Build #AI-173.4670197, built on March 22, 2018
JRE: 1.8.0_152-release-1024-b02 amd64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
Windows 10 10.0

I already tried clean rebuild and update gradle, restart Android Studio and PC, but without success. Any ideas?

PS: of course I have internet. Also, if you open a link in the browser - the file is downloaded.

jcenter is having issues at the moment, please check http://status.bintray.com/

EDIT: it looks like the link above was sunset, new link at: https://status.gradle.com/

After updating the Android Studio to 3.1.0 ,

I just had the same problem, i resolved it using

 maven {   url "https://maven.google.com"  }

to the TopMost buildScript like this in project-level gradle :-

 buildscript {
    repositories {
      .....
      ...
     maven {   url "https://maven.google.com"   }

For reference take a sample of the project-level gradle:-

buildscript {

  repositories {
      google()
      jcenter()
      maven { url 'https://maven.fabric.io/public' }
      maven { url 'https://jitpack.io' }
      mavenCentral()
      maven { url 'https://maven.fabric.io/public' }
      maven {  url "https://maven.google.com"  }
  }
 dependencies {
     classpath 'com.android.tools.build:gradle:3.1.0'
     classpath 'io.fabric.tools:gradle:1.24.4'
   }
}

 allprojects {
   repositories {
      google()
      jcenter()      
   }
 }

task clean(type: Delete) {
    delete rootProject.buildDir
}

Note :- One more thing:-

In gradle-wrapper.properties use this :-

  distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip

Instead of 4.1-all.zip .

Edit :- If you want to resolve the issue fast , you can also try adding these - according to Omar's answer :-

 maven { url "http://dl.bintray.com/riteshakya037/maven" }

along with

  maven { url "https://maven.google.com" }