MySQL データベース サーバー mysqld を停止しています

MySQL データベース サーバー mysqld を停止しています

私はWindowsサブシステムLinux(Ubuntu 20)にPostgresをインストールしようとしています。そして、次のコマンドを実行すると、 sudo apt install libpq-dev

次のエラーが表示されます。

Reading package lists... Done
Building dependency tree
Reading state information... Done
libpq-dev is already the newest version (12.4-0ubuntu0.20.04.1).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
2 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] Y
Setting up mysql-server-8.0 (8.0.21-0ubuntu0.20.04.4) ...
invoke-rc.d: could not determine current runlevel
 * Stopping MySQL database server mysqld                                                                         [ OK ]
update-alternatives: error: alternative path /etc/mysql/mysql.cnf doesn't exist
dpkg: error processing package mysql-server-8.0 (--configure):
 installed mysql-server-8.0 package post-installation script subprocess returned error exit status 2
No apport report written because the error message indicates its a followup error from a previous failure.
                                                                                                          dpkg: dependency problems prevent configuration of mysql-server:
 mysql-server depends on mysql-server-8.0; however:
  Package mysql-server-8.0 is not configured yet.

dpkg: error processing package mysql-server (--configure):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 mysql-server-8.0
 mysql-server
E: Sub-process /usr/bin/dpkg returned an error code (1)

問題はどこにあり、どうすればこれを克服できるのでしょうか。

ありがとう

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