consistent memory

Hello, I’m at the final steps in developing a chatbot using langchain, I’m facing a problem tho, when I run my chatbot on VS code, it forgets the previous conversation, however this does not happen on Jupyter Notebook, I’ve searched up and my problem might be variables consistency, is there a way to make it persistent in remembering previous conversation??
If you guys think another problem might be the cause please tell me about it.
Any help would be appreciated.
Thanks!