alibaba/nacos · error · NacosException

500

500

Error message

empty response body

What it means

Error "empty response body" thrown in alibaba/nacos.

Source

Thrown at maintainer-client/src/main/java/com/alibaba/nacos/maintainer/client/ai/PipelineMaintainerServiceImpl.java:168

    private Map<String, String> buildListQueryParams(String resourceType, String resourceName,
        String namespaceId,
        String version, int pageNo, int pageSize) {
        Map<String, String> params = new HashMap<>(8);
        params.put("resourceType", resourceType);
        putIfNotBlank(params, "resourceName", resourceName);
        putIfNotBlank(params, "namespaceId", namespaceId);
        putIfNotBlank(params, "version", version);
        params.put("pageNo", String.valueOf(pageNo));
        params.put("pageSize", String.valueOf(pageSize));
        return params;
    }
    
    private static <T> Result<T> parseResultFromHttp(HttpRestResult<String> restResult,
        NacosTypeReference<Result<T>> typeReference)
        throws NacosException {
        String body = restResult.getData();
        if (StringUtils.isBlank(body)) {
            throw new NacosException(NacosException.SERVER_ERROR, "empty response body");
        }
        try {
            Result<T> result = JsonUtils.toObj(body, typeReference);
            if (result == null) {
                throw new NacosException(NacosException.SERVER_ERROR,
                    "failed to parse Result wrapper");
            }
            return result;
        } catch (Exception e) {
            throw new NacosException(NacosException.SERVER_ERROR,
                "failed to parse Result: " + e.getMessage(), e);
        }
    }
    
    private static <T> T unwrapSuccessData(Result<T> result) throws NacosException {
        if (result == null) {
            throw new NacosException(NacosException.SERVER_ERROR, "empty Result");
        }

View on GitHub (pinned to 9b989acdf1)

Solutions

1. Review the input and runtime state for pipeline empty response body, correct the reported problem, and retry.

When it happens

Trigger: Thrown at maintainer-client/src/main/java/com/alibaba/nacos/maintainer/client/ai/PipelineMaintainerServiceImpl.java:168 when the library encounters an invalid state.

Common situations: The pipeline maintainer API returned an empty response body.

AI-assisted analysis of alibaba/nacos@9b989acdf1 (2026-08-14). Data as JSON: /api/errors/354660c2d1819fb5. Report an issue: GitHub.