Problem with popup windows in wordpress show blank

Hi there !!

I’m experiencing a problem with wordpress.
If I go to the plugin section and clic on Show details on a plugin. It will pop up a windows that is supposed to show details of the plugin. Instead, it show a blank page.
If I update a plugin, I won’t see all the the update process and showing update succesfull. It will show a blank page, so I have no idea when a update is fnished.

Is there a way to fix that. It was working before.
I did try the reinstall wordpress button but still don’t work.

Thank you !