Building a PDF-Chat App using LangChain, OpenAI API & Streamlit

[sailendukumar]

While implementing the code getting below error which is related to ChromaDB. Any idea how to get rid of it? or any suggestion to use an alternate vector DB?

ValueError: Expected collection name that (1) contains 3-63 characters, (2) starts and ends with an alphanumeric character, (3) otherwise contains only alphanumeric characters, underscores or hyphens (-), (4) contains no two consecutive periods (..) and (5) is not a valid IPv4 address, got Pdf
Traceback:

[vincfor]

On line 64 of app.py changes Pdf to pdf. Capitalization is not allowed for Chroma collection names.

^[a-z0-9][a-z0-9._-]*[a-z0-9]$