ОШИБКА 2002 (HY000): не удается подключиться к локальному серверу MySQL через сокет '/var/run/mysqld/mysqld.sock' После обновления Ubuntu 20.04

После запуска sudo apt upgrade я только что получил ошибку ОШИБКА 2002 (HY000): Не удается подключиться к локальному серверу MySQL через сокет ' /var/run/mysqld/mysqld.sock'.

Многие темы, которые я видел с этой ошибкой, посвящены другой ситуации и проблеме.

Это то, что у меня в '/var/log/mysql/error.log':

2020-07-30T09:43:01.219692Z 1 [System] [MY-013577] [InnoDB] InnoDB initialization has ended.
2020-07-30T09:43:03.681422Z 0 [ERROR] [MY-011292] [Server] Plugin mysqlx reported: 'Preparation of I/O interfaces failed, X Protocol won't be accessible'
2020-07-30T09:43:03.681865Z 0 [ERROR] [MY-011300] [Server] Plugin mysqlx reported: 'Setup of socket: '/var/run/mysqld/mysqlx.sock' failed, can't create lock file /var/run/mysqld/mysqlx.sock.lock'
2020-07-30T09:43:03.710324Z 4 [System] [MY-013381] [Server] Server upgrade from '80020' to '80021' started.
2020-07-30T09:45:34.494717Z 4 [ERROR] [MY-013178] [Server] Execution of server-side SQL statement '-- Copyright (c) 2014, 2019, Oracle and/or its affiliates. All rights reserved.
--
-- This program is free software; you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation; version 2 of the License.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
--
-- View: version
--
-- Shows the sys schema and mysql versions
--
-- NOTE: This view is deprecated and will be removed in a future release.
--
-- mysql> select * from sys.version;
-- +-------------+---------------+
-- | sys_version | mysql_version |
-- +-------------+---------------+
-- | 2.1.1       | 8.0.18        |
-- +-------------+---------------+
-- 
CREATE OR REPLACE
  DEFINER = 'mysql.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW version (
  sys_version,
  mysql_version
) AS 
SELECT '2.1.1' AS sys_version,
        version() AS mysql_version;
' failed with error code = 1347, error message = ''sys.version' is not VIEW'.
2020-07-30T09:45:34.520029Z 0 [ERROR] [MY-013380] [Server] Failed to upgrade server.
2020-07-30T09:45:34.521143Z 0 [ERROR] [MY-010119] [Server] Aborting
2020-07-30T09:45:36.912218Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld (mysqld 8.0.21-0ubuntu0.20.04.3) starting as process 7215
2020-07-30T09:45:37.117399Z 1 [System] [MY-013576] [InnoDB] InnoDB initialization has started.

Как я могу это исправить? Я использую Ubuntu 20.04.