alibaba/nacos · error · NacosException

400

400

Error message

properties is null

What it means

Error "properties is null" thrown in alibaba/nacos.

Source

Thrown at maintainer-client/src/main/java/com/alibaba/nacos/maintainer/client/ai/AiMaintainerFactory.java:40

/**
 * Nacos AI maintainer service.
 *
 * @author Nacos
 */
public class AiMaintainerFactory {
    
    /**
     * create AI maintainer service.
     *
     * @param properties properties
     * @return naming maintainer service
     * @throws NacosException nacos exception
     */
    public static AiMaintainerService createAiMaintainerService(Properties properties)
        throws NacosException {
        if (properties == null) {
            throw new NacosException(NacosException.INVALID_PARAM, "properties is null");
        }
        return new NacosAiMaintainerServiceImpl(properties);
    }
}

View on GitHub (pinned to 9b989acdf1)

Solutions

1. Provide a non-null value for ai maintainer properties null before invoking this operation.

When it happens

Trigger: Thrown at maintainer-client/src/main/java/com/alibaba/nacos/maintainer/client/ai/AiMaintainerFactory.java:40 when the library encounters an invalid state.

Common situations: Creating the AI maintainer factory with null properties.

AI-assisted analysis of alibaba/nacos@9b989acdf1 (2026-08-14). Data as JSON: /api/errors/2410c6e63ef70987. Report an issue: GitHub.