Hello, everyone!

I can't create attachments in my deployed odoo instance. I tried to create attachments through technical/attachments. There's nothing wrong with files under 800kb. But when I try to upload larger files, the message "Connection lost" appears when I press the save button. And then the connection is restored. It doesn't depend on the file type (I tried with pdf, txt, doc, xcls).

I am new to Odoo and a bit confused. What's more, my local version is working correctly.

I will be happy to hear any advice!