install WhatsApp Linux deb

 $ sudo dpkg -i whatsapp-for-linux_1.6.2_amd64.deb
[sudo] password for dhwan:
Selecting previously unselected package whatsapp-for-linux.
(Reading database ... 360114 files and directories currently installed.)
Preparing to unpack whatsapp-for-linux_1.6.2_amd64.deb ...
Unpacking whatsapp-for-linux (1.6.2) ...
dpkg: dependency problems prevent configuration of whatsapp-for-linux:
 whatsapp-for-linux depends on libayatana-appindicator3-1; however:
  Package libayatana-appindicator3-1 is not installed.

dpkg: error processing package whatsapp-for-linux (--install):
 dependency problems - leaving unconfigured
Processing triggers for bamfdaemon (0.5.3+18.04.20180207.2-0ubuntu2) ...
Rebuilding /usr/share/applications/bamf-2.index...
Processing triggers for gnome-menus (3.36.0-1ubuntu1) ...
Processing triggers for desktop-file-utils (0.24-1ubuntu3) ...
Processing triggers for mime-support (3.64ubuntu1) ...
Processing triggers for hicolor-icon-theme (0.17-2) ...
Errors were encountered while processing:
 whatsapp-for-linux

$ sudo apt install -f
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Correcting dependencies... Done
The following additional packages will be installed:
  libayatana-appindicator3-1 libayatana-indicator3-7
The following NEW packages will be installed:
  libayatana-appindicator3-1 libayatana-indicator3-7
0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
Need to get 49,3 kB of archives.
After this operation, 184 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://id.archive.ubuntu.com/ubuntu focal/universe amd64 libayatana-indicator3-7 amd64 0.6.3-1 [27,5 kB]
Get:2 http://id.archive.ubuntu.com/ubuntu focal/universe amd64 libayatana-appindicator3-1 amd64 0.5.4-2 [21,8 kB]
Fetched 49,3 kB in 2s (24,4 kB/s)                     
Selecting previously unselected package libayatana-indicator3-7:amd64.
(Reading database ... 360146 files and directories currently installed.)
Preparing to unpack .../libayatana-indicator3-7_0.6.3-1_amd64.deb ...
Unpacking libayatana-indicator3-7:amd64 (0.6.3-1) ...
Selecting previously unselected package libayatana-appindicator3-1.
Preparing to unpack .../libayatana-appindicator3-1_0.5.4-2_amd64.deb ...
Unpacking libayatana-appindicator3-1 (0.5.4-2) ...
Setting up libayatana-indicator3-7:amd64 (0.6.3-1) ...
Setting up libayatana-appindicator3-1 (0.5.4-2) ...
Setting up whatsapp-for-linux (1.6.2) ...
Processing triggers for libc-bin (2.31-0ubuntu9.9) ...