I was testing some features in Konsole (Plasma's terminal) and accidentally set the command when you open it to something that is not bash and now it just flashes when I open.
The default command to open Konsole was /bin/bash and I changed to neofetch && /bin/bash but I typed something wrong and now terminal don't open bash and just flashes when opened.
I was wondering if there is some way to reset or reinstall it, but I didn't find anything useful on google.