Lost the sidebar on category page

Hi!
The code for the sidebar is still in the file so I don’t know what happened there, have you tried adding and removing the widgets?

I have experience a similar issue.

I have found the “guilty code”.
Through appareance > widgets I have a TEXT.
The code inside javascript made that the side left bar is not showing.
This only happen in the v 4.4 with twentyfourteen.
I also mention that in the admin the plugin supercache menu is completely left instead of centered.

Carolina is right remove the items inside the widget one by one till you find which one is the “bad code”.