OOUIcons only appear in visual editor.

[LADSR]

When in visual editor the icons appear but when the page is saved they just show up as blank space. They also don't show up when using Special:Network.

MediaWiki | 1.41.0 (e60a71b)
PHP | 8.2.18
ICU | 70.1
MariaDB | 10.6.16-MariaDB-0ubuntu0.22.04.1
Lua | 5.1.5
Network | 2.0.1

[LADSR]

Update: Now no part of the network graph is showing...

[inscrut]

because you are useing Short URL

Use this:

{{#network:
 | options=
{
    "nodes": {
    "shape": "image"
},
"groups": {
    "bluelink": {
        "image": "https://fullurl/mediawiki/resources/lib/ooui/themes/wikimediaui/images/icons/article-rtl-progressive.svg"
    },
    "redlink": {
        "image": "https://fullurl/mediawiki/resources/lib/ooui/themes/wikimediaui/images/icons/articleNotFound-ltr.svg"
    },
    "externallink": {
        "image": "https://fullurl/mediawiki/resources/lib/ooui/themes/wikimediaui/images/icons/linkExternal-ltr-progressive.svg"
    }
}
}
}}