Could not use APOC procedures

news2024/9/20 8:11:10

报错内容：

Traceback (most recent call last):
  File "/root/anaconda3/envs/sakura/lib/python3.9/site-packages/langchain_community/graphs/neo4j_graph.py", line 205, in __init__
    self.refresh_schema()
  File "/root/anaconda3/envs/sakura/lib/python3.9/site-packages/langchain_community/graphs/neo4j_graph.py", line 248, in refresh_schema
    for el in self.query(
  File "/root/anaconda3/envs/sakura/lib/python3.9/site-packages/langchain_community/graphs/neo4j_graph.py", line 232, in query
    data = session.run(Query(text=query, timeout=self.timeout), params)
  File "/root/anaconda3/envs/sakura/lib/python3.9/site-packages/neo4j/_sync/work/session.py", line 313, in run
    self._auto_result._run(
  File "/root/anaconda3/envs/sakura/lib/python3.9/site-packages/neo4j/_sync/work/result.py", line 181, in _run
    self._attach()
  File "/root/anaconda3/envs/sakura/lib/python3.9/site-packages/neo4j/_sync/work/result.py", line 301, in _attach
    self._connection.fetch_message()
  File "/root/anaconda3/envs/sakura/lib/python3.9/site-packages/neo4j/_sync/io/_common.py", line 178, in inner
    func(*args, **kwargs)
  File "/root/anaconda3/envs/sakura/lib/python3.9/site-packages/neo4j/_sync/io/_bolt.py", line 849, in fetch_message
    res = self._process_message(tag, fields)
  File "/root/anaconda3/envs/sakura/lib/python3.9/site-packages/neo4j/_sync/io/_bolt4.py", line 368, in _process_message
    response.on_failure(summary_metadata or {})
  File "/root/anaconda3/envs/sakura/lib/python3.9/site-packages/neo4j/_sync/io/_common.py", line 245, in on_failure
    raise Neo4jError.hydrate(**metadata)
neo4j.exceptions.ClientError: {code: Neo.ClientError.Procedure.ProcedureNotFound} {message: There is no procedure with the name `apoc.meta.data` registered for this database instance. Please ensure you've spelled the procedure name correctly and that the procedure is properly deployed.}

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/langchain-master/templates/neo4j-semantic-ollama/ingest.py", line 9, in <module>
    graph = Neo4jGraph()
  File "/root/anaconda3/envs/sakura/lib/python3.9/site-packages/langchain_community/graphs/neo4j_graph.py", line 208, in __init__
    raise ValueError(
ValueError: Could not use APOC procedures. Please ensure the APOC plugin is installed in Neo4j and that 'apoc.meta.data()' is allowed in Neo4j configuration

报错原因

没有安装APOC插件

解决方案

我的neo4j版本为5.17.0，可以安装最新的5.17.1的neo4j-apoc-procedures
可以看到最新的版本对LLM的支持比较好
在这里插入图片描述
从网上搜索的资料和GitHub官网可以看到需要下载apoc-<version>-all.jar包移动到$NEO4J_HOME/plugins/

但是5.17.1中没有这个包

尝试按照上上一个图片中的Build & install the current development branch from source的方式源码编译
在这里插入图片描述
下载了半个小时，编译了20多分钟，放弃了

更换neo4j版本为4.4.30

安装方式参考
最终得到如下版本信息

# java --version
java 11.0.22 2024-01-16 LTS
Java(TM) SE Runtime Environment 18.9 (build 11.0.22+9-LTS-219)
Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.22+9-LTS-219, mixed mode)
# neo4j --version
neo4j 4.4.30