'Gradle Sync Issue Kotlin after Android 3.1 Stable Update

Hey after updating Android Studio to 3.1 Stable version i am getting following error to all my projects. Any help will be appreciated.

Could not download kotlin-reflect.jar (org.jetbrains.kotlin:kotlin-reflect:1.1.3-2): No cached version available for offline mode



Solution 1:[1]

I guess its Kotlin version related issue. First try to update your kotling version. I guess latest version is 1.2.31

The version of Kotlin to use is usually defined as the kotlin_version property:

buildscript {
    ext.kotlin_version = '1.2.31'

    repositories {
        mavenCentral()
    }

    dependencies {
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

For details: https://kotlinlang.org/docs/reference/using-gradle.html

Solution 2:[2]

I have answered a similar question here . One of the key is to update the kotlin plugin from settings in android studio.

Solution 3:[3]

try this Android studio -> File -> Invalidate Caches

Solution 4:[4]

Sorry, Silly Mistake figure out just Uncheck Offline checkbox from Gradle settings. :) Download all dependencies by build gradle online.

Sources

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Source: Stack Overflow

Solution Source
Solution 1 0xAliHn
Solution 2 Kanishk Gupta
Solution 3 Hamid-Ghasemi
Solution 4 Joker