Updated PHP 7.4, cannot connect to nextcloud

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Nextcloud version: 19.2.?
Operating system and version : 18.04.5 LTS
Apache or nginx version : 2.4.29
PHP version : 7.4.9

The issue you are facing:

Is this the first time you’ve seen this error? : Y

Steps to replicate it:

  1. Log in
  2. Profit

The output of your Nextcloud log in Admin > Logging:

cant access

The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):

$CONFIG = array (
  'instanceid' => '****',
  'passwordsalt' => '****',
  'secret' => '****',
  'trusted_domains' =>
  array (
    0 => 'cloud.hixfamily.us',
  'datadirectory' => '/media/data',
  'dbtype' => 'mysql',
  'version' => '',
  'overwrite.cli.url' => 'https://cloud.hixfamily.us',
  'dbname' => 'nextcloud',
  'dbhost' => 'localhost',
  'htaccess.RewriteBase' => '/',
  'dbport' => '',
  'dbtableprefix' => 'oc_',
  'mysql.utf8mb4' => true,
  'dbuser' => '****',
  'dbpassword' => '****',
  'installed' => true,
  'memcache.local' => '\\OC\\Memcache\\Redis',
  'memcache.locking' => '\\OC\\Memcache\\Redis',
  'filelocking.enabled' => 'true',
  'redis' =>
  array (
    'host' => '/var/run/redis/redis-server.sock',
    'port' => 0,
    'timeout' => 0.0,
  'ldapIgnoreNamingRules' => false,
  'ldapProviderFactory' => 'OCA\\User_LDAP\\LDAPProviderFactory',
  'mail_from_address' => 'cloud',
  'mail_smtpmode' => 'smtp',
  'mail_sendmailmode' => 'smtp',
  'mail_domain' => 'hixfamily.us',
  'mail_smtphost' => 'mail.hixfamily.us',
  'mail_smtpport' => '25',
  'twofactor_enforced' => 'true',
  'twofactor_enforced_groups' =>
  array (
    0 => 'admin',
  'twofactor_enforced_excluded_groups' =>
  array (
  'maintenance' => false,
  'theme' => '',
  'loglevel' => 2,
  'updater.secret' => '****',
  'app_install_overwrite' =>
  array (
    0 => 'keeweb',

The output of your Apache/nginx/system log in /var/log/____:

[php7:error] [pid 1555] [client] PHP Fatal error:  Class 'XMLReader' not found in /var/www/html/nextcloud/3rdparty/sabre/xml/lib/Reader.php on line 22

When I updated to NC 19.02 the admin panel informed me that PHP 19.2 was no longer supported. So I followed this help here:

and upgraded.

After running the following commands after a restart:
sudo apt-get upgrade
sudo apt-get distupgrade
sudp apt-get autoremove
and then restart
I could no longer access my next cloud site.

I know it is some config file that is still pointing to 7.2 I just dont know where to look.

any help would be appreciated.
Thanks :slight_smile:

I think apache points to the wrong php version

Just execute
sudo a2dismod php7.3
sudo a2enmod php7.4

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Life Saver!

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