public void removeEmptySelectorData(final String pluginName) {
        Map<String, SelectorData> pathSelectorCache = SELECTOR_DATA_MAP.get(pluginName);
        if (Objects.isNull(pathSelectorCache) || pathSelectorCache.isEmpty()) {
            return;
        }
        pathSelectorCache.entrySet().removeIf(entry -> Objects.isNull(entry.getValue().getId()));
    }
remove empty selector data.

@param pluginName plugin name
shenyu-plugin/shenyu-plugin-base/src/main/java/org/apache/shenyu/plugin/base/cache/MatchDataCache.java