Problem with RSS-Feed on Spotify

I’ve recently had a problem with my RSS feed on Spotify. It has always worked without any issues, but now I’m getting an XML error message. The podcast is published everywhere else, just not on Spotify. I’ve already had the feed analyzed, and the result was:

This feed does not validate.

line 2, column 0: XML parsing error: :2:0: XML or text declaration not at start of entity

Line 2: <?xml version="1.0" encoding="UTF-8"?><rss version=“2.0”

Unfortunately, I don’t know what this means or what I should do next. Has anyone else had a similar problem and can help me? Here’s my system report:

Website https://yeahfussball.de
PHP Version 8.3.26
WordPress Version 6.8.3
WordPress Theme Abisko v1.0.6
Active Plugins

  • Akismet Anti-spam: Spam Protection v5.5
  • Antispam Bee v2.11.8
  • Broken Link Checker v2.4.6
  • Contact Form 7 v6.1.2
  • CookieYes | GDPR Cookie Consent v3.3.6
  • Enable jQuery Migrate Helper v1.4.1
  • IONOS Assistant v8.5.10
  • IONOS Help v2.2.1
  • IONOS Navigation v1.0.7
  • IONOS Performance v2.0.3
  • Single Sign-On v2.2.4
  • Limit Login Attempts Reloaded v2.26.23
  • Meta Box v9.10.8
  • Podlove Podcast Publisher v4.3.0
  • Podlove Subscribe Button v1.3.12
  • Podlove Web Player v5.9.1
  • Statify v1.8.5
  • Advanced Editor Tools v5.9.2
  • Ultimate Member v2.10.6
  • Yoast SEO v26.2
  • Smush v3.22.1
    WordPress Database Charset utf8
    WordPress Database Collate
    Publisher Version 4.3.0
    Publisher Database Version 162
    Web Player Version player_v5
    open_basedir ok
    curl Version 7.74.0
    iconv available
    simplexml ok
    max_execution_time 30
    upload_max_filesize 128M
    memory_limit 1024M
    disable_classes
    disable_functions
    permalinks ok (/%postname%/)
    podlove_permalinks ok
    podcast_settings ok
    web_player ok
    podlove_cache on
    assets

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Nice, Everything looks fine!