Chromium stopped downloading files

Chromium stopped downloading files on one PC. It doesn't work whether it's pdf file from a website or photos from another. When I download from Firefox, it works. So I know that something broke on Chromium. when I go to the application download page, it's all blank. This page normally shows history of all your downloaded files.

What could have possibly broke? I'm a newbie that's why I don't know where to start digging. Appreciate any help.

update:

For chromium browser

 sudo apt-get install --reinstall chromium-browser

To clear the download history choose the clear all option at download tab. look at the image to eye it.

If problem still persists then disable all chrome extensions and try again.

hope that helps.