I'm using Arch Linux. After installed packagekit-qt5 package, Discover notify me whenever there are package updates. The update page shows up after I click the notification. It tells what package can be updated, but the package size are showed as "0KB", which is not correct. How can I correct it?

Here is a screenshot of Discover update page: https://i.loli.net/2021/11/20/2cQ1jIXYMUT7lRJ.png

(sorry I can't figure out how to post image on this forum)

How to post images:
The size of an image for display is limited so make sure you only use a cut-out of the relevant image, avoid screenshots of complete desktops.
Spectacle allows for screenshots of rectangular sections and delays which makes this quite easy, e.g. I use a 2 seconds delay before the new screenshot is taken which gives me ample time to place the mouse where the screenshot should start. Uploading is also quite easy directly within Spectacle and gives a link you can just paste in your post.
Please do NOT use sites that do not allow direct viewing of images without downloads. Use a free hosting site for your image like imgur, then post the link here. Preview your post and set the image between IMG markups.