Goulash (Zupa gulaszowa) in a slow cooker

We need: 600 g beef 2 potatoes 500 g champignons 150 ml red wine 3 sweet peppers 2 onions 2 cloves of garlic 2 tbsp. tomato paste 600 g beef 2 potatoes 500 g champignons 150 ml red wine 3 sweet peppers 2 onions 2 cloves of garlic 2 tbsp. tomato paste