Gradle Could not find org.codehaus.groovy:groovy:4.0.12

I had to delete my project and recreate it and when I did, I started getting the following error from my gradle build.

Starting a Gradle Daemon (subsequent builds will be faster)

> Task :compileJava
Note: /home/thomas/workspace/util/src/main/java/com/heavyweightsoftware/util/EasyXmlParser.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.

> Task :compileTestGroovy FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':compileTestGroovy'.
> Could not resolve all files for configuration ':detachedConfiguration1'.
   > Could not find org.codehaus.groovy:groovy:4.0.12.
     Searched in the following locations:
       - https://repo.maven.apache.org/maven2/org/codehaus/groovy/groovy/4.0.12/groovy-4.0.12.pom
     If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration.
     Required by:
         project :
   > Could not find org.codehaus.groovy:groovy-ant:4.0.12.
     Searched in the following locations:
       - https://repo.maven.apache.org/maven2/org/codehaus/groovy/groovy-ant/4.0.12/groovy-ant-4.0.12.pom
     If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration.
     Required by:
         project :
   > Could not find org.codehaus.groovy:groovy-templates:4.0.12.
     Searched in the following locations:
       - https://repo.maven.apache.org/maven2/org/codehaus/groovy/groovy-templates/4.0.12/groovy-templates-4.0.12.pom
     If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration.
     Required by:
         project :

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

Deprecated Gradle features were used in this build, making it incompatible with Gradle 7.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/6.6.1/userguide/command_line_interface.html#sec:command_line_warnings

BUILD FAILED in 5s
3 actionable tasks: 3 executed

Google the error and found NOTHING... Here is the useful parts of my gradle build.

plugins {
    id 'groovy'
    id 'java'
}

...

apply plugin: 'groovy'
apply plugin: 'java'

...

dependencies {
    implementation (
            'org.apache.groovy:groovy-all:4.0.12',
            'jakarta.xml.bind:jakarta.xml.bind-api:4.0.0',
    )

    testImplementation (
            'org.junit.jupiter:junit-jupiter-api:5.8.1',
            'org.spockframework:spock-core:2.4-M1-groovy-4.0',
            'io.github.joke:spock-mockable:2.3.1',
            'cglib:cglib-nodep:3.3.0'
    )

    testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.8.1'
}

...

test {
    useJUnitPlatform()
}

I only use groovy for spock testing of my java classes.

Anyone see anything wrong?

If you look at the release notes of Gradle 7.5, you will see that this version added the ability to compile Groovy 4 code.

As you can see from your build's output, your Gradle version is 6.6.1.

So your Gradle version is simply too old to build Groovy 4 code.

If you want to use Groovy 4, you need to update Gradle to at least 7.5.