[I] [Bug] 改变gremlin-server.yaml里empty-sample.groovy为example.groovy后start-hugegraph出现报错 [incubator-hugegraph]

[via GitHub]

hahahahbenny opened a new issue, #2785:
URL: https://github.com/apache/incubator-hugegraph/issues/2785

   ### Bug Type (问题类型)
   
   server status (启动/运行异常)
   
   ### Before submit
   
   - [x] 我已经确认现有的 [Issues](https://github.com/apache/hugegraph/issues) 与 
[FAQ](https://hugegraph.apache.org/docs/guides/faq/) 中没有相同 / 重复问题 (I have 
confirmed and searched that there are no similar problems in the historical 
issue and documents)
   
   ### Environment (环境信息)
   
   - Server Version: 1.5.0 (Apache Release Version)
   - Backend: RocksDB x nodes, HDD or SSD 
   - OS: Ubuntu 20.04.6 LTS 
   
   ### Expected & Actual behavior (期望与实际表现)
   
   打算解决以下issue时发现复现情况2时出现问题：
   **相关issue** 
[原始issue](https://github.com/apache/incubator-hugegraph/issues/2310)
   
   
   
   原始的`gremlin.server.yaml` 中的` 
org.apache.tinkerpop.gremlin.jsr223.ScriptFileGremlinPlugin:` 属性，直接运行` 
./start-hugegraph.sh `没有报错
   ```
         org.apache.tinkerpop.gremlin.jsr223.ScriptFileGremlinPlugin: {
           files: [scripts/empty-sample.groovy]
         }
   ```
   
   上述属性修改为`scripts/example.groovy`
   ```
         org.apache.tinkerpop.gremlin.jsr223.ScriptFileGremlinPlugin: {
           files: [scripts/example.groovy]
         }
   ```
   
   后出现以下报错 (截取主要片段
   
   
[hugegraph-server.log](https://github.com/user-attachments/files/20612933/hugegraph-server.log)
   
   )
   ```
   **2025-06-05 22:14:09 [gremlin-server-exec-1] [WARN] o.a.h.c.OptionSpace - 
Already registered option holder: rocksdb (class 
org.apache.hugegraph.backend.store.rocksdb.RocksDBOptions)
   2025-06-05 22:14:09 [gremlin-server-exec-1] [ERROR] 
o.a.t.g.j.DefaultGremlinScriptEngineManager - Could not create 
GremlinScriptEngine for gremlin-groovy**
   
   **Caused by: javax.script.ScriptException: javax.script.ScriptException: 
org.apache.hugegraph.backend.BackendException: Exists BackendStoreProvider: 
rocksdb (class 
org.apache.hugegraph.backend.store.rocksdb.RocksDBStoreProvider)**
        
   **Caused by: javax.script.ScriptException: 
org.apache.hugegraph.backend.BackendException: Exists BackendStoreProvider: 
rocksdb (class 
org.apache.hugegraph.backend.store.rocksdb.RocksDBStoreProvider)**
   
   **Caused by: org.apache.hugegraph.backend.BackendException: Exists 
BackendStoreProvider: rocksdb (class 
org.apache.hugegraph.backend.store.rocksdb.RocksDBStoreProvider)**
        
   **2025-06-05 22:14:09 [main] [WARN] o.a.t.g.s.u.ServerGremlinExecutor - 
Could not initialize gremlin-groovy GremlinScriptEngine as init script could 
not be evaluated**
   
   **Caused by: java.lang.IllegalArgumentException: gremlin-groovy is not an 
available GremlinScriptEngine
        at 
org.apache.tinkerpop.gremlin.jsr223.CachedGremlinScriptEngineManager.registerLookUpInfo(CachedGremlinScriptEngineManager.java:95)
 ~[gremlin-core-3.5.1.jar:3.5.1]**
   
   ```
   
   具体的`logfile`如下
   
   ### Vertex/Edge example (问题点 / 边数据举例)
   
   ```javascript
   
   ```
   
   ### Schema [VertexLabel, EdgeLabel, IndexLabel] (元数据结构)
   
   ```javascript
   
   ```


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