I am adding file upload support to our knowledge bot using this : How to pass multimodal data to models | 🦜️🔗 LangChain , however, I do not see that the contents of the file are used in my call chain. Note using Langchain and not switching to Langraph.
A work around is to add the content parts as Human Message and pass in a Messages Placeholder in ChatPromptTemplate with the Human Message. Not ideal but works for now.