I'm testing Poncho on the Crypto++ wiki. The skin fails to load with the message:
Warning: getimagesize(//www.cryptopp.com/w/images/logo/Logo-Steel.png): failed to open stream: No such file or directory in /var/www/html/w/skins/Poncho/Poncho.php on line 38 title="Visit the main page" href="/wiki/Main_Page" style="background-image: url("/w/images/logo/Logo-Steel.png");">Crypto++ Wiki Fatal error: OOUI\Exception: OOUI\Theme::singleton was called with no singleton theme set. in /var/www/html/w/vendor/oojs/oojs-ui/php/Theme.php:31 Stack trace: #0 /var/www/html/w/vendor/oojs/oojs-ui/php/Element.php(242): OOUI\Theme::singleton() #1 /var/www/html/w/vendor/oojs/oojs-ui/php/Tag.php(462): OOUI\Element->toString() #2 /var/www/html/w/skins/Poncho/Poncho.php(29): OOUI\Tag->__toString() #3 /var/www/html/w/skins/Poncho/Poncho.phtml(12): PonchoTemplate->searchInput() #4 /var/www/html/w/skins/Poncho/Poncho.php(138): include('/var/www/html/w...') #5 /var/www/html/w/includes/skins/SkinTemplate.php(227): PonchoTemplate->execute() #6 /var/www/html/w/includes/OutputPage.php(2706): SkinTemplate->outputPage() #7 /var/www/html/w/includes/MediaWiki.php(867): OutputPage->output(true) #8 /var/www/html/w/includes/MediaWiki.php(879): MediaWiki->{closure}() #9 /var/www/html/w/includes/MediaWiki.php(517): MediaWiki->main() #10 /var/www/html/w/index.php(42): MediaWiki->run() #11 {main} in /var/www/html/w/vendor/oojs/oojs-ui/php/Tag.php on line 464