You may have noticed leaks in your guttering from holes in the framework. Depending on the material of your guttering it may be exposed to rusting and creating these holes. You might have something repetitively knocking the framework during worse weather which, over time, is chipping the material away. Alternatively, it could be that your guttering wasn’t put together properly when was first installed.
If you are experiencing these holes and leaks, you need to attend to it as soon as possible, depending on how big the problem is you can use patching kits or seek professional help.