gradle/gradle · error · UnknownDomainObjectException

Extension of type '{type}' does not exist. Currently registe

Error message

Extension of type '{type}' does not exist. Currently registered extension types: {types}

What it means

Gradle throws this error when the following condition is violated: Extension of type '<type>' does not exist. Currently registered extension types: <types>

Source

Thrown at platforms/core-configuration/model-core/src/main/java/org/gradle/internal/extensibility/ExtensionsStorage.java:88

        getHolderByType(type).configure(action);
    }

    public <T> T getByType(TypeOf<T> type) {
        return getHolderByType(type).get();
    }

    @Nullable
    public <T> T findByType(TypeOf<T> type) {
        ExtensionHolder<T> found = findHolderByType(type);
        return found != null ? found.get() : null;
    }

    private <T> ExtensionHolder<T> getHolderByType(TypeOf<T> type) {
        ExtensionHolder<T> found = findHolderByType(type);
        if (found != null) {
            return found;
        }
        throw new UnknownDomainObjectException(
            "Extension of type '" + type.getSimpleName() + "' does not exist. Currently registered extension types: " + registeredExtensionTypeNames());
    }

    @Nullable
    private <T> ExtensionHolder<T> findHolderByType(TypeOf<T> type) {
        ExtensionHolder<T> firstHolderWithExactPublicType = firstHolderWithExactPublicType(type);
        return firstHolderWithExactPublicType != null
            ? firstHolderWithExactPublicType
            : firstHolderWithAssignableType(type);
    }

    @Nullable
    private <T> ExtensionHolder<T> firstHolderWithExactPublicType(TypeOf<T> type) {
        for (ExtensionHolder<?> extensionHolder : extensions.values()) {
            if (type.equals(extensionHolder.getPublicType())) {
                return uncheckedCast(extensionHolder);
            }
        }

View on GitHub (pinned to 534f27719b)

Solutions

1. Verify the path is correct and that the file or directory actually exists before referencing it.
2. Create the missing file/directory or update the build script to point at an existing location.

When it happens

Trigger: Thrown at platforms/core-configuration/model-core/src/main/java/org/gradle/internal/extensibility/ExtensionsStorage.java:88 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of gradle/gradle@534f27719b (2026-08-22). Data as JSON: /api/errors/f85f0d20b9f0e938. Report an issue: GitHub.