One side of my house (which doesn't get a lot of sunlight) has lots of
moss growing on the ground and against the side wall. Given there are
so much moss growing, does this indicate there is a moisture problem?

I have had problem with rising damp with the house a few years ago, so
should I completely remove all the moss growing on the side wall? Will
it reduce the chance of having rising damp problem again?

Will there be any problems if I don't do anything and allow the moss to
grow rampantly?