How to Fix : Existing lock /var/run/yum.pid: another copy is running as pid 12813 error on Linux

Existing lock /var/run/yum.pid: another copy is running as pid 12813.

Another app is currently holding the yum lock; waiting for it to exit... 

[root@pgsql ~]#

[root@pgsql ~]# yum update -y

Loaded plugins: langpacks, ulninfo

Existing lock /var/run/yum.pid: another copy is running as pid 12813.

Another app is currently holding the yum lock; waiting for it to exit...

  The other application is: PackageKit

    Memory : 220 M RSS (651 MB VSZ)

    Started: Fri Apr  2 20:38:00 2021 - 04:54 ago

    State  : Sleeping, pid: 12813

Another app is currently holding the yum lock; waiting for it to exit...

  The other application is: PackageKit

    Memory : 220 M RSS (651 MB VSZ)

    Started: Fri Apr  2 20:38:00 2021 - 04:56 ago

    State  : Sleeping, pid: 12813

^C

Exiting on user cancel.

[root@pgsql ~]#

[root@pgsql ~]#

[root@pgsql run]#

[root@pgsql run]# systemctl -l|grep package

packagekit.service                                                                       loaded active running   PackageKit Daemon

[root@pgsql run]#

[root@pgsql run]#

[root@pgsql run]#

[root@pgsql run]#

[root@pgsql run]# systemctl disable packagekit.service

[root@pgsql run]#

[root@pgsql run]# systemctl stop packagekit.service

[root@pgsql run]#

[root@pgsql run]#