Recently I upgraded Lubuntu 18.04 to 20.04 in my computer and some of the icons have disappeared. Here are two screenshots:
https://i.sstatic.net/Yb2LE.png
https://i.sstatic.net/G01nl.png
I tried running sudo dpkg --configure -a and sudo update-mime-database /usr/share/mime in the terminal (taken from this post), but it didn't worked. What should I do then to have the icons back?
