private static void fixHeaders(final HttpHeaders httpHeaders) {
        httpHeaders.remove(HttpHeaders.CONTENT_LENGTH);
        httpHeaders.set(HttpHeaders.TRANSFER_ENCODING, CHUNKED);
    }
fix headers.

@param httpHeaders the headers
shenyu-plugin/shenyu-plugin-base/src/main/java/org/apache/shenyu/plugin/base/utils/ResponseUtils.java