Reported on https://commons.wikimedia.org/wiki/Commons:Village_pump#Do_we_have_a_technical_problem_in_the_upload_form.3F
Go to https://commons.wikimedia.org/wiki/Special:Upload?debug=true
Get:
Uncaught Error: Widget not found: undefined
at Object.OO.ui.Element.static.unsafeInfuse (oojs-ui-core.js?ece99:695)
at Object.OO.ui.Element.static.infuse (oojs-ui-core.js?ece99:662)
at Object.OO.ui.infuse (oojs-ui-core.js?ece99:340)
at HTMLDocument.<anonymous> (mediawiki.action.edit.js?29a7f:23)
at fire (load.php?debug=true&lang=en&modules=jquery%2Cmediawiki|mediawiki.legacy.wikibits&only=scripts&skin=modern&version=0ynbgde:3148)
at Object.fireWith [as resolveWith] (load.php?debug=true&lang=en&modules=jquery%2Cmediawiki|mediawiki.legacy.wikibits&only=scripts&skin=modern&version=0ynbgde:3260)
at Function.ready (load.php?debug=true&lang=en&modules=jquery%2Cmediawiki|mediawiki.legacy.wikibits&only=scripts&skin=modern&version=0ynbgde:3472)
at completed (load.php?debug=true&lang=en&modules=jquery%2Cmediawiki|mediawiki.legacy.wikibits&only=scripts&skin=modern&version=0ynbgde:3503)That code is:
OO.ui.Element.static.unsafeInfuse = function ( idOrNode, domPromise ) {
// look for a cached result of a previous infusion.
var id, $elem, data, cls, parts, parent, obj, top, state, infusedChildren;
if ( typeof idOrNode === 'string' ) {
id = idOrNode;
$elem = $( document.getElementById( id ) );
} else {
$elem = $( idOrNode );
id = $elem.attr( 'id' );
}
if ( !$elem.length ) {
throw new Error( 'Widget not found: ' + id );
}Traceback:
mediawiki.action.edit.js#L23 <anonymous>: wpSummary = OO.ui.infuse( $( '#wpSummaryWidget' ) );
oojs-ui-core.js#L340 infuse: return OO.ui.Element.static.infuse( idOrNode );
oojs-ui-core.js#L662 infuse: var obj = OO.ui.Element.static.unsafeInfuse( idOrNode, false );
oojs-ui-core.js#L695 unsafeInfuse: throw new Error( 'Widget not found: ' + id );
$( '#wpSummaryWidget' ) is of length 0 on Special:Upload