Restart : nginx [Failed], Reload : mysql [Failed], Unable to change owner : /var/www/22222

Hello Everyone, I am passing a terrible time. Facing a tone of issues while trying to setup EE. I am using Ubuntu 18.04.1 LTS so PPA isn’t supported. so I had to remove the PPA repos and try again.

Before removing PPA:

azizul@azizul-Lenovo-ideapad:~$ sudo ee stack install
[sudo] password for azizul: 
WP-CLI is already installed
Adding repository for MySQL, please wait...
Adding repository for NGINX, please wait...
Adding repository for PHP, please wait...
Updating apt-cache, please wait...
Oops Something went wrong!!
Check logs for reason `tail /var/log/ee/ee.log` & Try Again!!!

azizul@azizul-Lenovo-ideapad:~$ sudo tail /var/log/ee/ee.log
Get:9 http://bd.archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB]
Hit:12 http://ppa.launchpad.net/ondrej/php/ubuntu bionic InRelease
Hit:13 http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu bionic InRelease
Hit:14 http://linux.avocode.com/apt all InRelease
Err:15 http://ppa.launchpad.net/fioan89/slidewall/ubuntu bionic Release
  404  Not Found [IP: 91.189.95.83 80]
Hit:16 http://bd.archive.ubuntu.com/ubuntu bionic-updates InRelease
Reading package lists...
2018-08-27 11:29:51,461 (INFO) ee : Oops Something went wrong!!
2018-08-27 11:29:51,462 (ERROR) ee : Check logs for reason `tail /var/log/ee/ee.log` & Try Again!!!

After removing PPA:

azizul@azizul-Lenovo-ideapad:~$ sudo ee stack install
WP-CLI is already installed
Adding repository for MySQL, please wait...
Adding repository for NGINX, please wait...
Adding repository for PHP, please wait...
Updating apt-cache, please wait...
Installing packages, please wait...
Oops Something went wrong!!
Check logs for reason `tail /var/log/ee/ee.log` & Try Again!!!

azizul@azizul-Lenovo-ideapad:~$ sudo tail /var/log/ee/ee.log
Fetched 163 kB in 4s (40.3 kB/s)
Reading package lists...
2018-08-27 11:45:07,354 (INFO) ee : Installing packages, please wait...
Reading package lists...
Building dependency tree...
Reading state information...
E: Unable to locate package nginx-custom
E: Unable to locate package nginx-ee
2018-08-27 11:45:07,819 (INFO) ee : Oops Something went wrong!!
2018-08-27 11:45:07,819 (ERROR) ee : Check logs for reason `tail /var/log/ee/ee.log` & Try Again!!!

I installed nginx separately:

sudo apt install nginx

After installing nginx:

azizul@azizul-Lenovo-ideapad:~$ sudo ee stack install
EasyEngine detected a previously installed Nginx package. It may or may not have required modules. 
If you need help, please create an issue at https://github.com/EasyEngine/easyengine/issues/ 

Installing EasyEngine Configurations forNGINX
Reload : nginx     [Failed]
HTTP Auth User Name: easyengine
HTTP Auth Password : hjZJGU
Reload : nginx     [Failed]
WP-CLI is already installed
Adding repository for MySQL, please wait...
Adding repository for PHP, please wait...
Updating apt-cache, please wait...
Installing packages, please wait...
Oops Something went wrong!!
Check logs for reason `tail /var/log/ee/ee.log` & Try Again!!!

After removing some PPA repo again:

azizul@azizul-Lenovo-ideapad:~$ sudo ee stack install
EasyEngine detected a previously installed Nginx package. It may or may not have required modules. 
If you need help, please create an issue at https://github.com/EasyEngine/easyengine/issues/ 

Restart : nginx     [Failed]
PHP already installed
Postfix is already installed
WP-CLI is already installed
Adding repository for MySQL, please wait...
Updating apt-cache, please wait...
Installing packages, please wait...
Downloading MySQLTuner           [Done]
Downloading phpMyAdmin           [Done]
Downloading Adminer              [Done]
Downloading phpMemcachedAdmin    [Done]
Downloading clean.php            [Done]
Downloading opcache.php          [Done]
Downloading Opgui                [Done]
Downloading OCP.php              [Done]
Downloading Webgrind             [Done]
Downloading pt-query-advisor     [Done]
Downloading Anemometer           [Done]
Reload : mysql     [Failed]
Unable to change owner : /var/www/22222 

So, how do I get rid off these issues now?

Thanks