alibaba/nacos · error · IllegalArgumentException

Required config missing: {}

Error message

Required config missing: {}

What it means

Error "Required config missing: {}" thrown in alibaba/nacos.

Source

Thrown at core/src/main/java/com/alibaba/nacos/core/plugin/config/PluginConfigBasicChecker.java:77

    
    /**
     * Validate required fields and basic value types in effective config.
     *
     * @param pluginInfo plugin info
     * @param config effective config
     */
    public void validateEffectiveConfig(PluginInfo pluginInfo, Map<String, String> config) {
        List<ConfigItemDefinition> definitions = pluginInfo.getConfigDefinitions();
        if (definitions == null || definitions.isEmpty()) {
            return;
        }
        for (ConfigItemDefinition definition : definitions) {
            if (StringUtils.isBlank(definition.getKey())) {
                continue;
            }
            String value = config.get(definition.getKey());
            if (definition.isRequired() && StringUtils.isEmpty(value)) {
                throw new IllegalArgumentException(
                    "Required config missing: " + definition.getKey());
            }
            if (value != null) {
                validateValueType(definition, value);
            }
        }
    }
    
    private Map<String, ConfigItemDefinition> indexDefinitions(
        List<ConfigItemDefinition> definitions) {
        Map<String, ConfigItemDefinition> result = new LinkedHashMap<>();
        for (ConfigItemDefinition definition : definitions) {
            if (StringUtils.isNotBlank(definition.getKey())) {
                result.put(definition.getKey(), definition);
            }
        }
        return result;
    }

View on GitHub (pinned to 9b989acdf1)

Solutions

1. Include the required parameter in the request and retry.

When it happens

Trigger: Thrown at core/src/main/java/com/alibaba/nacos/core/plugin/config/PluginConfigBasicChecker.java:77 when the library encounters an invalid state.

Common situations: A required plugin configuration key is missing.

AI-assisted analysis of alibaba/nacos@9b989acdf1 (2026-08-14). Data as JSON: /api/errors/6e95902b5ff26153. Report an issue: GitHub.