Can't upload files in odoo 18 #118

Hi

I created a new account.move record and account.movelineals record with success.

But when I try to upload pdf files in ir.attachment, the files can't be loaded in odoo site. I got a "can't load file" error.

My odoo is onsite, and configured to save files in local store, instead of database.

So, how can I upload files to odoo?