Error:Unknown host 'jcenter.bintray.com'.

Go to File > Project Structure and then:

Select project in the left-hand menu
change jcenter to jcenter() in the Android plugin Repository and Default Library Repository

Just clean and Rebuild the project. This worked for me

I got the same error and solved the problem using following instruction.

Go to your project level gradle build script add maven { url"https://jitpack.io"} into allprojects.

allprojects {
    repositories {
        google()
        jcenter()
        maven {url"https://jitpack.io"}


    }
}

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