Upgraded to 2.4.8.4 Can’t download any file by clicking on download links

I have recently upgraded to 2.4.8.4 from 2.4.8.2. Whenever I click on any file to download; either review version or the original submitted file, it redirects me to the summary view.

The error log reflects the following error;

[18-Feb-2019 08:49:42 UTC] ojs2: 404 Not Found
[18-Feb-2019 08:49:57 UTC] ojs2: 404 Not Found
[18-Feb-2019 08:49:59 UTC] ojs2: 404 Not Found
[18-Feb-2019 08:50:02 UTC] ojs2: 404 Not Found
[18-Feb-2019 08:50:07 UTC] ojs2: 404 Not Found
[18-Feb-2019 08:50:55 UTC] ojs2: 404 Not Found
[18-Feb-2019 08:50:55 UTC] ojs2: 404 Not Found
[18-Feb-2019 08:51:51 UTC] ojs2: 404 Not Found
[18-Feb-2019 08:51:51 UTC] ojs2: 404 Not Found
[18-Feb-2019 08:52:06 UTC] ojs2: 404 Not Found
[18-Feb-2019 08:53:06 UTC] ojs2: 404 Not Found
[18-Feb-2019 08:53:09 UTC] ojs2: 404 Not Found
[18-Feb-2019 08:53:13 UTC] ojs2: 404 Not Found
[18-Feb-2019 08:53:16 UTC] ojs2: 404 Not Found

@asmecher

Can you please see this?