[BUG] Credential error processing document loader

[luminaes]

Describe the bug
When processing information in a document loader using confluence as source for the first time, everything works correctly. However, attempting to process the information again results in the error message:
"please fill all mandatory fields" on the web page.
If attempting the same process via API using /api/v1/document-store/loader/process/<id of the loader>, the following error is returned:
{ "statusCode": 500, "success": false, "message": "Error: documentStoreServices.processLoader - Error: documentStoreServices._saveChunksToStorage - Cannot convert undefined or null to object", "stack": {} }
The only workaround I found is to switch credentials in the web portal. When switching credentials, the null field appears to be filled correctly.
As a clarification, both sets of credentials used have similar values.

Screenshots

Setup

• Installation via helm
• Flowise Version 2.2.2
• OS: Linux debian 12
• Browser is Brave Version 1.73.97 Chromium: 131.0.6778.108

Additional context
Add any other context about the problem here.