Hangs getting of distinct list of edge labels

[Eugene-M]

Checked other resources

• I added a very descriptive title to this issue.
• I searched the LangChain documentation with the integrated search.
• I used the GitHub search to find a similar question and didn't find it.
• I am sure that this is a bug in LangChain rather than my code.
• The bug is not resolved by updating to the latest stable version of LangChain (or the specific integration package).

Example Code

SELECT *
FROM cypher('graph', $$
MATCH ()-[e]->() RETURN collect(distinct label(e)) as labels
$$) as (e agtype);

Error Message and Stack Trace (if applicable)

No response

Description

https://github.com/langchain-ai/langchain/blob/master/libs/community/langchain_community/graphs/age_graph.py
Line 158 contains wrong MATCH statement definition.
It should be with a right arrow:
MATCH ()-[e]->() RETURN collect(distinct label(e)) as labels

System Info

A Docker container with the latest version of langchain.