Fix

Signed-off-by: ZePan110 <ze.pan@intel.com>

Author: ZePan110

CodeGen/codegen.py

@@ -17,7 +17,7 @@
 from comps.cores.proto.docarray import LLMParams
 from fastapi import Request
 from fastapi.responses import StreamingResponse
-from langchain.prompts import PromptTemplate
+from langchain_core.prompts import PromptTemplate
 
 logger = CustomLogger("opea_dataprep_microservice")
 logflag = os.getenv("LOGFLAG", False)