Remove the plugin instead

base/build.gradle

@@ -1,6 +1,5 @@
 plugins {
     id 'java-library'
-    id 'java-test-fixtures'
     id 'maven-publish'
     id "org.jetbrains.kotlin.jvm"
     id 'com.adarshr.test-logger' version '4.0.0'
@@ -95,7 +94,7 @@ jacocoTestReport {
 
 afterEvaluate {
     publishing {
-        publications.getByName(project.name) {
+        publications.named(project.name) {
             pom {
                 description = 'ProGuard is a free shrinker, optimizer, obfuscator, and preverifier for Java bytecode'
             }

build.gradle

@@ -60,7 +60,7 @@ allprojects { Project project ->
             configure(project) {
                 publishing {
                     publications {
-                        create(project.name, MavenPublication) {
+                        register(project.name, MavenPublication.class) {
                             pom {
                                 artifactId = "proguard-$project.name"
                                 name = "$group:$artifactId"
@@ -116,7 +116,7 @@ allprojects { Project project ->
                 publishing {
                     publications {
                         getByName(project.name) {
-                            from components.java
+                            from(components.java)
                         }
                     }
                 }