I've compared it to portable infoboxes on other wiki's I help out and they look the same format wise. What they contain is different, but the coding structure is the same. I have no idea what about this template isn't portable. I'm probably missing something really simple. Any help would be appreciated. Sonic-nancy-fan (talk) 05:40, November 17, 2017 (UTC)
There's a long running and difficult to track down bug in the system, and it reports some Infobox templates as noon-portable when they are. As a suggestion, remove any whitespace from the template's end. If there is any code on save / publish that is not portable, it will continue to flag it. Otherwise, the template page itself will register as portable (and the warning widget on the Template page will disappear). It will show up in the Special:Insights list until the daily update to the cache removes it.