alibaba/nacos · error · NacosException

500

500

Error message

empty Result

What it means

Error "empty Result" thrown in alibaba/nacos.

Source

Thrown at maintainer-client/src/main/java/com/alibaba/nacos/maintainer/client/config/NacosConfigMaintainerServiceImpl.java:293

        Map<String, String> params = new HashMap<>(8);
        params.put("dataId", dataId);
        params.put("groupName", groupName);
        params.put("namespaceId", namespaceId);
        RequestResource resource = buildRequestResource(namespaceId, groupName, dataId);
        HttpRequest httpRequest = buildRequestWithResource(resource).setHttpMethod(HttpMethod.GET)
            .setPath(Constants.AdminApiPath.CONFIG_ADMIN_PATH + "/beta").setParamValue(params)
            .build();
        HttpRestResult<String> httpRestResult =
            getClientHttpProxy().executeSyncHttpRequest(httpRequest);
        Result<ConfigGrayInfo> result = JsonUtils.toObj(httpRestResult.getData(),
            new NacosTypeReference<Result<ConfigGrayInfo>>() {
            });
        return result.getData();
    }
    
    private static boolean unwrapBooleanResult(Result<Boolean> result) throws NacosException {
        if (result == null) {
            throw new NacosException(NacosException.SERVER_ERROR, "empty Result");
        }
        if (!ErrorCode.SUCCESS.getCode().equals(result.getCode())) {
            String message =
                StringUtils.isNotBlank(result.getMessage()) ? result.getMessage()
                    : "request failed";
            throw new NacosException(NacosException.SERVER_ERROR, message);
        }
        if (result.getData() == null) {
            throw new NacosException(NacosException.SERVER_ERROR, "empty boolean result data");
        }
        return result.getData();
    }
    
    @Override
    public Map<String, Object> cloneConfig(String namespaceId, List<ConfigCloneInfo> cloneInfos,
        String srcUser,
        SameConfigPolicy policy) throws NacosException {
        return cloneConfig(namespaceId, namespaceId, cloneInfos, srcUser, policy);

View on GitHub (pinned to 9b989acdf1)

Solutions

1. Review the input and runtime state for config maintainer empty result, correct the reported problem, and retry.

When it happens

Trigger: Thrown at maintainer-client/src/main/java/com/alibaba/nacos/maintainer/client/config/NacosConfigMaintainerServiceImpl.java:293 when the library encounters an invalid state.

Common situations: The config maintainer API returned an empty Result.

AI-assisted analysis of alibaba/nacos@9b989acdf1 (2026-08-14). Data as JSON: /api/errors/5bef7d1de30ddaeb. Report an issue: GitHub.