raises_on_error = False should catch all exceptions, including HTTP errors

[johngerving]

Bug

A requests.exceptions.HTTPError raised when a PDF is retrieved from a remote URL with DocumentConverter.convert_all() is not caught when raises_on_error is set to False.

Steps to reproduce

Run the following script with a link that returns a 404 response:

from docling.document_converter import DocumentConverter

source = "<a link here>"
converter = DocumentConverter()
results = converter.convert_all([source])
for result in results:
    print(result.document.export_to_markdown())

Docling version

Docling version: 2.15.1
Docling Core version: 2.14.0
Docling IBM Models version: 3.1.0
Docling Parse version: 3.0.0

Python version

Python 3.10.12