Question
how can i stop this problem

Answer
Hi Mark, you can use a product called Atomic Grow which will keep the fungus off the leaves and will also help your plant have more and sweeter fruit and keep the nematodes away from the roots. It is organic to boot.    My fig this year had hundreds of fruit and in other years just a hand full.  This time of year you will loose leafs to winter it is deciduous but will come back as soon as it warms up.  kathy