Do I have to increase the swap?
That's what you are told
You need a swap that is at least the size of your memory
There's not much space and it's a SSD disk but that does not change the basics
Open the partitioning manager (I think it is gparted in xfce) and change the size of the swap to at least one GB. If it already has that size don't do anything and post back, because then there is some other problem