As a logged-in user, visit http://commons.wikimedia.beta.wmflabs.org/wiki/Special:UploadWizard
UW never loads, just shows a spinner.
Javascript error is :
Uncaught Error: Unknown dependency: schema.UploadWizardStep bits.beta.wmflabs.org/commons.wikimedia.beta.wmflabs.org/load.php?debug=fal…%7Cmw.MwEmbedSupport&only=scripts&skin=vector&version=20140518T101426Z:166
Version: unspecified
Severity: major
$wgEventLoggingSchemas[ 'UploadWizardStep' ] is defined too early, and might get overwritten by the EventLogging extension, depending on what order things are included in.
Change 135087 had a related patch set uploaded by Gergő Tisza:
Do not override existing value when initializing $wgEventLoggingSchemas
Change 135087 merged by jenkins-bot:
Do not override existing value when initializing $wgEventLoggingSchemas