HTTP Error 403: Forbidden in a recipe for "Les Echos"

[Villard]

Hello
I'm just starting to build a recipe for the "Les Echos" French newspaper based on this feed :
https://services.lesechos.fr/rss/les-echos-economie.xml

but I get an error :
mechanize._response.get_seek_wrapper_class.<locals >.httperror_seek_wrapper: HTTP Error 403: Forbidden on this simple recipe written below.

It seems it is due to protection on the website. I've tried to access the URL via python commands and I've only succeeded when I implemented Selenium.
(NB : I use my subscription username/password to launch the recipe)

So, what will be the possibilities with a Calibre recipe to get the XML flow of this URL ?

thank you

from calibre.web.feeds.news import BasicNewsRecipe, classes

class LesEchos(BasicNewsRecipe):
    title = 'Les Echos'
    oldest_article = 1
    max_articles_per_feed = 100
    no_stylesheets = False
    needs_subscription = True
    language = 'fr'
    remove_empty_feeds = True
    ignore_duplicate_articles = {'title', 'url'}
    reverse_article_order = True

    feeds          = [
        ('Actualités : Economie', 'https://services.lesechos.fr/rss/les-echos-economie.xml')
     ]

calibre_most_common_ua = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.87 Safari/537.36'

Here is the response :

calibre, version 7.23.0 (win32, embedded-python: True)
Erreur lors de la conversion: Échoué: Récupérer des actualités à partir de Les Echos

Récupérer des actualités à partir de Les Echos
Conversion options changed from defaults:
output_profile: 'generic_eink'
verbose: 2
Resolved conversion options
calibre version: 7.23.0
{'add_alt_text_to_img': False,
'asciiize': False,
'author_sort': None,
'authors': None,
'base_font_size': 0,
'book_producer': None,
'change_justification': 'original',
'chapter': None,
'chapter_mark': 'pagebreak',
'comments': None,
'cover': None,
'debug_pipeline': None,
'dehyphenate': True,
'delete_blank_paragraphs': True,
'disable_font_rescaling': False,
'dont_download_recipe': False,
'dont_split_on_page_breaks': True,
'duplicate_links_in_toc': False,
'embed_all_fonts': False,
'embed_font_family': None,
'enable_heuristics': False,
'epub_flatten': False,
'epub_inline_toc': False,
'epub_max_image_size': 'none',
'epub_toc_at_end': False,
'epub_version': '2',
'expand_css': False,
'extra_css': None,
'extract_to': None,
'filter_css': None,
'fix_indents': True,
'flow_size': 260,
'font_size_mapping': None,
'format_scene_breaks': True,
'html_unwrap_factor': 0.4,
'input_encoding': None,
'input_profile': <calibre.customize.profiles.InputProfile object at 0x000002694340CED0>,
'insert_blank_line': False,
'insert_blank_line_size': 0.5,
'insert_metadata': False,
'isbn': None,
'italicize_common_cases': True,
'keep_ligatures': False,
'language': None,
'level1_toc': None,
'level2_toc': None,
'level3_toc': None,
'line_height': 0,
'linearize_tables': False,
'lrf': False,
'margin_bottom': 5.0,
'margin_left': 5.0,
'margin_right': 5.0,
'margin_top': 5.0,
'markup_chapter_headings': True,
'max_toc_links': 50,
'minimum_line_height': 120.0,
'no_chapters_in_toc': False,
'no_default_epub_cover': False,
'no_inline_navbars': False,
'no_svg_cover': False,
'output_profile': <calibre.customize.profiles.GenericEink object at 0x000002694344C850>,
'page_breaks_before': None,
'prefer_metadata_cover': False,
'preserve_cover_aspect_ratio': False,
'pretty_print': True,
'pubdate': None,
'publisher': None,
'rating': None,
'read_metadata_from_opf': None,
'recipe_specific_option': None,
'remove_fake_margins': True,
'remove_first_image': False,
'remove_paragraph_spacing': False,
'remove_paragraph_spacing_indent_size': 1.5,
'renumber_headings': True,
'replace_scene_breaks': '',
'search_replace': None,
'series': None,
'series_index': None,
'smarten_punctuation': False,
'sr1_replace': '',
'sr1_search': '',
'sr2_replace': '',
'sr2_search': '',
'sr3_replace': '',
'sr3_search': '',
'start_reading_at': None,
'subset_embedded_fonts': False,
'tags': None,
'test': False,
'timestamp': None,
'title': None,
'title_sort': None,
'toc_filter': None,
'toc_threshold': 6,
'toc_title': None,
'transform_css_rules': None,
'transform_html_rules': None,
'unsmarten_punctuation': False,
'unwrap_lines': True,
'use_auto_toc': False,
'verbose': 2}
InputFormatPlugin: Recipe Input running
Downloading recipe urn: custom:1002
Using user agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.87 Safari/537.36
Failed feed: Actualités : Economie
Traceback (most recent call last):
File "calibre\web\feeds\news.py", line 1778, in parse_feeds
File "mechanize\_mechanize.py", line 241, in open_novisit
File "mechanize\_mechanize.py", line 313, in _mech_open
mechanize._response.get_seek_wrapper_class.<locals >.httperror_seek_wrapper: HTTP Error 403: Forbidden

Traceback (most recent call last):
File "runpy.py", line 198, in _run_module_as_main
File "runpy.py", line 88, in _run_code
File "site.py", line 83, in <module>
File "site.py", line 78, in main
File "site.py", line 50, in run_entry_point
File "calibre\utils\ipc\worker.py", line 215, in main
File "calibre\gui2\convert\gui_conversion.py", line 31, in gui_convert_recipe
File "calibre\gui2\convert\gui_conversion.py", line 25, in gui_convert
File "calibre\ebooks\conversion\plumber.py", line 1129, in run
File "calibre\customize\conversion.py", line 245, in __call__
File "calibre\ebooks\conversion\plugins\recipe_input.py ", line 155, in convert
File "calibre\web\feeds\news.py", line 1125, in download
File "calibre\web\feeds\news.py", line 1315, in build_index
ValueError: No articles found, aborting

[unkn0wn]

try adding browser_type = 'webengine'