What you’ve done here is changing slug for products. For example : http://localhost:8080/shop/product-category/sample-product as explained in WP, but not your Woocommerce home. Change the base to base default in permalinks settings. Then read after 🙂
If you want to change your “Shop Homepage” go to http://localhost:8080/wp-admin/admin.php?page=wc-settings&tab=products§ion=display
That’s the good way to do it !