Extend, extends, mixins - суть не меняется. Все равно src не передается, даже если в расширенном компоненте объявить в props.
[Vue warn]: Missing required prop: "src"
found in
---> <BImgLazyEx> at src/b-img-lazy-ex.vue... (497 recursive calls)
<ScGallery> at src/sc-gallery.vue
<App> at src/App.vue
<Root>
Package gcc is not avaible, but is refered to by another package.
This may mean that the package is missing, has been obsoleted, or is only avaible from another source