Nextcloud 20 - handler and null errors

Just updated from 19.0.6 to 20.0.3 and some errors are appearing in the browser console when accessing the files main page.

    Please do NOT wait for the DOMContentLoaded before registering your viewer handler handlers @ viewer-main.js

And

`null _formatRemoteShare	@additionalScripts.js?v=5d66bc0f-27:1`

I also get a new error when viewing pdf files

unified-search.js?v=5d66bc0f-27:1 Uncaught TypeError: Cannot read property 'contains' of undefined

Nobody else has these errors ? I have them in Chrome and Firefox.

PHP 7.4.13
MariaDB 10.5.8
nginx/1.19.5

  $CONFIG = array (
  'instanceid' => 'xxx',
  'passwordsalt' => 'xxx',
  'secret' => 'xxx',
  'trusted_domains' => 
  array (
    0 => 'xxx',
    1 => 'xxx',
  ),
  'datadirectory' => '/xxx',
  'dbtype' => 'mysql',
  'version' => '20.0.3.2',
  'overwriteprotocol' => 'https',
  'dbname' => 'xxx',
  'dbhost' => 'xxx',
  'dbport' => 'xxx',
  'dbtableprefix' => 'oc_',
  'mysql.utf8mb4' => true,
  'dbuser' => 'xxx',
  'dbpassword' => 'xxx',
  'installed' => true,
  'mail_smtpmode' => 'smtp',
  'mail_smtpsecure' => 'tls',
  'mail_sendmailmode' => 'smtp',
  'mail_from_address' => 'support',
  'mail_domain' => 'xxx',
  'mail_smtpauthtype' => 'LOGIN',
  'mail_smtpauth' => 1,
  'mail_smtphost' => 'xxx',
  'mail_smtpport' => 'xxx',
  'mail_smtpname' => 'xxx',
  'mail_smtppassword' => 'xxx',
  'updater.release.channel' => 'stable',
  'maintenance' => false,
  'theme' => '',
  'loglevel' => 2,
  'ldapIgnoreNamingRules' => false,
  'ldapProviderFactory' => 'OCA\\User_LDAP\\LDAPProviderFactory',
  'memcache.local' => '\\OC\\Memcache\\APCu',
  'memcache.distributed' => '\\OC\\Memcache\\Redis',
  'memcache.locking' => '\\OC\\Memcache\\Redis',
  'redis' => 
  array (
    'host' => 'localhost',
    'port' => 6379,
  ),
  'default_language' => 'fr',
  'force_language' => 'fr',
  'default_locale' => 'fr',
  'defaultapp' => 'files',
  'force_locale' => 'fr',
  'twofactor_enforced' => 'true',
  'twofactor_enforced_groups' => 
  array (
    0 => 'admin',
  ),
  'twofactor_enforced_excluded_groups' => 
  array (
  ),
  'overwrite.cli.url' => 'https://xxx',
  'simpleSignUpLink.shown' => false,
  'skeletondirectory' => '',
  'knowledgebaseenabled' => false,
  'preview_max_x' => '1080',
  'preview_max_y' => '1920',
  'jpeg_quality' => '60',
  'preview_max_scale_factor' => 1.5,
  'trashbin_retention_obligation' => '25, 30',
  'csrf.optout' => 
  array (
    0 => '/^WebDAVFS/',
    1 => '/^Microsoft-WebDAV-MiniRedir/',
    2 => '/RaiDrive/',
    3 => '/CrKey/',
  ),
);