[BUG] Document Stores - Notion Database: "Please fill in mandatory fields."

[BadrLaajali]

Describe the bug
When trying to save a Notion Document Store Loader the application says
"Please fill in mandatory fields."
even if all mandatory fields are set.

To Reproduce
Steps to reproduce the behavior:

Go to Document Stores
Click on a newly created Store
Click on Add Document Loader
Click on Notion DataBase
Fill in all mandatory fields
For the first time is working so data will be insert
Go back again and select in Option Preview & Process
Select Preview or Process and See error "Please fill in all mandatory fields."

Expected behavior
Expect to load data again from database

Screenshots

Setup

• Installation: docker
• Flowise Version: 2.2.3
• OS: Linux
• Browser: Arc

[saatchi-david]

I'm experiencing this as well.
Latest version.
OS: Win 11
Browser: Chrome

Hi @HenryHengZJ , if I may add here, it seems there's also an option missing from the doc loader.
I mentioned this before, but thought it was odd that the Notion db properties get upserted both as metadata as well as in the body of the document. In most cases, this isn't ideal as the same data gets sent to the LLM twice, and we don't have control for omitting it.

I took a look at the langchain docs and it seems there's an option to address this:

propertiesAsHeader: true, // Prepends a front matter header of the page properties to the page contents

Found here:
https://js.langchain.com/docs/integrations/document_loaders/web_loaders/notionapi/

When addressing this bug, would it be possible to add this option?

Greatly appreciated as always.