fix(redis): connect during health checks

modules/redis_manager.py

@@ -491,7 +491,9 @@ class RedisManager:
         
         try:
             if not self.client:
-                raise Exception("No Redis connection")
+                logger.info("Redis health check has no active client; connecting now")
+                if not self.connect():
+                    raise Exception("No Redis connection")
             
             # Test connection
             self.client.ping()

routers/langchain/neo4j_graph_qa.py

@@ -16,7 +16,7 @@ logging = logger.get_logger(
 from fastapi import APIRouter, HTTPException
 from langchain_classic.chains import GraphCypherQAChain
 from langchain_community.graphs import Neo4jGraph
-from langchain_community.chat_models import ChatOpenAI
+from langchain_openai import ChatOpenAI
 from langchain_classic.prompts.prompt import PromptTemplate
 from routers.llm.private.ollama.ollama_wrapper import OllamaWrapper
 from modules.database.tools.neontology.utils import get_node_types, get_rels_by_type