Gradle configuration error

[realrufans]

Hello, please help me out here. I'm very new to using external library.
My project gradle couldn't synchronize. It says the error is ... from your set-up code below .

allprojects {
    repositories {
        ...
        maven { url 'https://jitpack.io' }
    }
}

dependencies {
    implementation 'com.github.iammert:ReadableBottomBar:0.1'
}

Here's my initial gradle configuration

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.1.0-alpha08'
        

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

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

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

[ProProfessor]

the "...", simply shoudn't be there, erase this