Hi everyone, 

I have integrated WhatsApp with Odoo 15 using the WhatsApp Meta app from https://developers.facebook.com/ . The integration is working — I can send messages from Odoo to customers on WhatsApp.

Now I want to send a file link along with the message, like an invoice. for this I am using controller method, So I am generating a public link for the file, for example:

http://my_domain.com/whatsapp/public_file/21809

But when I click on this link, it shows this error:

Not Found

The requested URL was not found on the server.

I've been stuck on this problem for a few days. Can anyone help me understand what might be wrong?

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