We got a ticket regarding softaculous error during magneto installation.

The following errors were found :

There were some errors in decompressing the package files.

This error comes when the compress file is not downloaded correctly on server. 

Resolution:

  1. Login to server via root access.
  2. Now Go to directory /var/softaculous/
  3. You can Move or delete the CMS folder which has issue.
mv magento magento_old

or

rm -rf magento

4. Now execute the following CRON command.

/usr/local/cpanel/3rdparty/bin/php /usr/local/cpanel/whostmgr/docroot/cgi/softaculous/cron.php

Hope it will work for you.