I have not added any additional plugins to the site in months. Prior to the update to wordpress 6.8.3 and the download manager plugin to version 3.3.28 everything had worked.
I have turned off all of the additional plugins and theme and the server file picker still doesn’t work.
I’ve turned them all back on again to no avail.
There must be something else thats causing this. I’m at the point of downgrading your plugin to the version it did work.