Omeka comes with many modules as part of the core. However, some of them are replaced by modules we have developed.
youtube
The youtube module is replaced by our oEmbed-omeka-module
Do disable the youtube module edit /application/config/module.config.php and comment out these two lines as so:
'media_ingesters' => [
'factories' => [
'upload' => Service\Media\Ingester\UploadFactory::class,
'url' => Service\Media\Ingester\UrlFactory::class,
'html' => Service\Media\Ingester\HtmlFactory::class,
'iiif' => Service\Media\Ingester\IIIFFactory::class,
'oembed' => Service\Media\Ingester\OEmbedFactory::class,
//'youtube' => Service\Media\Ingester\YoutubeFactory::class,
],
],
'media_renderers' => [
'invokables' => [
'oembed' => Media\Renderer\OEmbed::class,
//'youtube' => Media\Renderer\Youtube::class,
'html' => Media\Renderer\Html::class,
'iiif' => Media\Renderer\IIIF::class,
],
'factories' => [
'file' => Service\Media\Renderer\FileFactory::class,
],
],