OEmbed module not working.

[Backpackstudio]

Expected behavior

When OEmbed module enabled and episode link is posted on another WP site, the embed player appears on post.

Actual

Nothing happens. WP doesn’t get any valid oembed response.

System information

Website *** PHP Version 7.3.8 WordPress Version 5.2.2 WordPress Theme Contentberg v1.6 Active Plugins
- ContentBerg Core v1.1.0 - Disable Comments v1.10.2 - Force Regenerate Thumbnails v2.0.6 - Podlove Podcast Publisher v2.9.1 - Regenerate Thumbnails v3.1.1 - Sphere Core v1.0.7 - WP Retina 2x v5.5.6 - WP User Avatar v2.2.4 WordPress Database Charset utf8mb4 WordPress Database Collate Publisher Version 2.9.1 Web Player Version player_v4 Twig Version 1.42.2 open_basedir ok curl Version 7.54.1 iconv available simplexml ok max_execution_time 30 upload_max_filesize 2047M memory_limit 1024M disable_classes
disable_functions
permalinks ok (/%category%/%postname%/) podlove_permalinks ok podcast_settings ok web_player ok podlove_cache on assets
  - mp3 audio/mpeg *** cron ok duplicate_guids ok

0 errors 0 notices Nice, Everything looks fine!