create_retrieval_chain verbose not working

[elhamod]

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

from langchain.chains import create_retrieval_chain
retrieval_chain = create_retrieval_chain(retriever, combine_docs_chain, verbose=True)
rag_chain.invoke({"input": question})

No verbose outcome.

Error Message and Stack Trace (if applicable)

No response

Description

qa_chain = load_qa_chain(chat, verbose=True) is possible

retrieval_chain = create_retrieval_chain(retriever, combine_docs_chain) is not allowed to have a verbose.

System Info

System Information

OS: Linux
OS Version: #1 SMP PREEMPT_DYNAMIC Thu Jun 27 21:05:47 UTC 2024
Python Version: 3.10.12 (main, Sep 11 2024, 15:47:36) [GCC 11.4.0]

Package Information

langchain_core: 0.3.15
langchain: 0.3.7
langchain_community: 0.3.5
langsmith: 0.1.137
langchain_text_splitters: 0.3.0

Optional packages not installed

langgraph
langserve

Other Dependencies

aiohttp: 3.10.10
async-timeout: 4.0.3
dataclasses-json: 0.6.7
httpx: 0.27.2
httpx-sse: 0.4.0
jsonpatch: 1.33
numpy: 1.26.4
orjson: 3.10.10
packaging: 24.1
pydantic: 2.9.2
pydantic-settings: 2.6.1
PyYAML: 6.0.2
requests: 2.32.3
requests-toolbelt: 1.0.0
SQLAlchemy: 2.0.35
tenacity: 9.0.0
typing-extensions: 4.12.2