Download is disallowed google chrome

Hello everyone,

the download function when opening a pdf is not possible on chrome is there a correction to be made?

The error into the console is : Download is disallowed. The frame initiating or instantiating the download is sandboxed, but the flag ‘allow-downloads’ is not set. See https://www.chromestatus.com/feature/5706745674465280 for more details.

Thank you in advance