What should I change in Build.graidle to make the project build?

Question

Android

Good afternoon!

My project stopped building in Android Studio after updating the Graidle plugin and Android Studio. The output is:

1) When building the project:

Unresolved reference: crashlytics
Unresolved reference: fabric
Unresolved reference: Fabric
Unresolved reference: Crashlytics

2) When starting the project:

Could not find :unspecified:.
Required by:
project :app > id.zelory:compressor:2.1.0

First errorI suspect the error is related to jcenter(). However, the advice to add the google() and mavenCentral() repositories to the build.gradle and dependencies.gradle files and arrange them in the order google(), mavenCentral(), jcenter() didn't work. As well as removing jcenter() in principle (advice from Android Studio).

The second error is generally incomprehensible to me, because the compressor is registered in the dependencies.gradle file.

The main question is: how to fix the errors?

The dependencies.gradle file now looks like this:

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

ext {
      ...
      compressor_version = '2.1.0'
      ...


      mainApplication = [
      ...
      compressor:                 "id.zelory:compressor:$compressor_version",
      ...
}

The build.gradle file looks like this:

apply from: 'buildsystem/dependencies.gradle'

buildscript {
    ext.kotlin_version = '1.5.21'
    ext.gradle_tools = '3.3.2'
    ext.build_tools = '27.0.3'

    ext.compile_sdk = 28
    ext.target_sdk = 28
    ext.min_sdk = 21

    repositories {
        google()
        mavenCentral()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:7.0.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        classpath "com.google.gms:google-services:4.3.8"
        classpath 'com.google.firebase:firebase-crashlytics-gradle:2.7.1'
    }
}
allprojects {
    repositories {
        google()
        mavenCentral()
        maven { url 'https://jitpack.io' } 
        jcenter()      
    }
}

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

Answer 1

The solution was this:
in order to build the project, I removed Fabric (it is outdated) and commented out Crashlytics, because they did not affect the main functions of the application.