quarkusio/quarkus · error · GradleException

Didn't find method

Error message

Didn't find method 

What it means

ConfigurationUtils.callGetter reads Quarkus Gradle extension configuration reflectively by invoking a no-arg getter (e.g. getDeploymentModule) on the extension object. If the expected getter method does not exist on the configuration class, it throws a GradleException naming the method and class. This protects against Gradle API shape changes across versions.

Source

Thrown at devtools/gradle/gradle-model/src/main/java/io/quarkus/gradle/extension/ConfigurationUtils.java:21

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

import org.gradle.api.GradleException;
import org.gradle.api.provider.ListProperty;
import org.gradle.api.provider.Property;
import org.jetbrains.annotations.NotNull;

// This is necessary because in included builds the returned `Project` instance and
// `QuarkusExtensionConfiguration` extension is provided by a different class loader
// which prevents us from creating some interface or casting to it directly.
public class ConfigurationUtils {
    private static Object callGetter(@NotNull Object extensionConfiguration, String getterName) {
        final Method getterMethod;

        try {
            getterMethod = extensionConfiguration.getClass().getMethod(getterName);
        } catch (NoSuchMethodException e) {
            throw new GradleException(
                    "Didn't find method " + getterName + " on class " + extensionConfiguration.getClass().getName(), e);
        }

        try {
            return getterMethod.invoke(extensionConfiguration);
        } catch (IllegalAccessException | InvocationTargetException e) {
            throw new GradleException(
                    "Failed to call method " + getterName + " on class " + extensionConfiguration.getClass().getName(), e);
        }
    }

    @SuppressWarnings("unchecked")
    public static Property<String> getDeploymentModule(@NotNull Object extensionConfiguration) {
        return (Property<String>) callGetter(extensionConfiguration, "getDeploymentModule");
    }

    @SuppressWarnings("unchecked")
    public static ListProperty<String> getConditionalDependencies(@NotNull Object extensionConfiguration) {

View on GitHub (pinned to e1c734241f)

Solutions

1. Align Gradle version with the one supported by the Quarkus plugin version (upgrade wrapper or downgrade Quarkus plugin)
2. Ensure all subprojects apply the same Quarkus Gradle plugin version
3. Remove custom wrappers/replacements of the quarkus extension configuration that omit the expected properties
4. Rebuild after a Gradle upgrade so stale plugin jars are replaced

// check the extension exposes the expected getter before Quarkus reflects on it
def ext = project.extensions.findByName('quarkus')
def expected = ['getDeploymentModule','getConditionalDependencies','getConditionalDevDependencies','getDependencyConditions']
def missing = expected.findAll { m -> !ext?.metaClass?.respondsTo(ext, m) }
if (missing) {
    throw new GradleException("Quarkus extension object missing methods: ${missing} — plugin/Gradle version mismatch")
}

try {
    project.evaluate()
} catch (GradleException e) {
    if (e.message?.startsWith('Didn\u0027t find method ')) {
        logger.error("Quarkus plugin incompatible with this Gradle version: {}", e.message)
    }
    throw e
}

When it happens

Trigger: getDeploymentModule, getConditionalDependencies, getConditionalDevDependencies, or getDependencyConditions calls callGetter with a getterName that the runtime extension configuration class does not expose — typically when Gradle's extension object differs from what Quarkus expects.

Common situations: Applying a Quarkus Gradle plugin built for a different Gradle version than the one running; custom/subclassed extension configurations missing expected properties; mixing Quarkus plugin versions in a multi-project build.

Related errors

• Quarkus code generation phase has failed
• Failed to generate sources in the QuarkusGenerateCode task f
• Failed to call method
• Expected : after attribute
• ${methodName} is not a getter

AI-assisted analysis of quarkusio/quarkus@e1c734241f (2026-09-05). Data as JSON: /api/errors/0e4be289a7fbd93b. Report an issue: GitHub.