Can't able to initiate/use mysql configuration on Ubuntu 19.04 properly.

[Pranav bhattarai]

After installing mysql using "sudo apt install mysql-server", I can't seem to use configure for the use:

pranav@pranav-Inspiron-5548:~$ sudo apt update
[sudo] password for pranav:
Hit:1 http://ubuntu.ntc.net.np/ubuntu disco InRelease
Hit:2 http://ubuntu.ntc.net.np/ubuntu disco-updates InRelease
Hit:3 http://ubuntu.ntc.net.np/ubuntu disco-backports InRelease
Get:4 http://ubuntu.ntc.net.np/ubuntu disco-security InRelease [97.5 kB]
Hit:12 http://repo.mysql.com/apt/ubuntu disco InRelease
Fetched 97.5 kB in 11s (9,133 B/s)
Reading package lists... Done
Building dependency tree
Reading state information... Done
All packages are up to date.

pranav@pranav-Inspiron-5548:~$ sudo apt install mysql-server
Reading package lists... Done
Building dependency tree
Reading state information... Done
mysql-server is already the newest version (8.0.17-1ubuntu19.04).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

pranav@pranav-Inspiron-5548:~$ sudo mysql_secure_installation
Securing the MySQL server deployment.

Enter password for user root:
Error: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
pranav@pranav-Inspiron-5548:~$

What type of password it is asking for?