[Python] I can't upload an image via InputStoryContentPhoto to aiogram3

I'm trying to write a bot on aiogram3 that will create stories in telegram via business mode

photo = FSInputFile("./a.jpg", filename="a.jpg")
content = InputStoryContentPhoto(photo=f"attach://a.jpg")
await callback.bot.post_story(
business_connection_id=user["business_connection_id"],
content=content,
active_period=86400,
post_to_chat_page=True
)


result:

TelegramBadRequest: Telegram server says - Bad Request: story photo must be uploaded as a file
​

the photo I'm trying to upload has a resolution of 1080x1920 as required in the docs.

I also tried passing the FSInputFile directly to InputStoryContentPhoto.

Continue reading...