Uninstalling Lightning Breaks: pm:enable was not found

Problem/Motivation

I have been trying to uninstall Lightning by following the steps shared on the official documentation page.

I upgraded my lightning distribution to the latest version as instructed.

Then I run pm:uninstall lightning

During the uninstalling process, there is an error that I believe needs attention:

The error says "Command pm:uninstall was not found." Strangely, after I run the command (pm:uninstall lightning), it seems that it is taking away so many drush commands including pm:enable pm:uninstall etc. My drush version is 10.5.0. Before I run pm:uninstall lightning, I check drush list and commands seem normal. But, after initiating the uninstall command, drush only lists part of the commands, I am also sharing the command list below right after the error message.

I am assuming the reduction in the commands happening due to the profile switch from "lightning" to "minimal". Apperantly, the uninstaller at the same time tries to use pm:uninstall command to uninstall profile_swticher module as part of the uninstallation process, which breaks the process.

Here's where the error happens.

Welcome to the Lightning uninstaller!
=====================================

Switching to minimal profile...
Modifying S:\Lab\xampp\htdocs\mysite\public_html\composer.json...

 * Ensuring direct Lightning dependencies are required
 * Ensuring required repositories are present
 * Adding required patches
 * Checking patcher configuration
 * Checking installer configuration
 * Checking scaffold configuration

 [success] Successfully uninstalled: lightning

In Process.php line 269:

  The command "S:\Lab\xampp\htdocs\mysite\vendor\drush\drush\drush pm:un
  install profile_switcher --yes --uri=default --root=S:\Lab\xampp\htdocs\mysite\public_html" failed.

  Exit Code: 1(General error)

  Working directory:

  Output:
  ================


  Error Output:
  ================



    Command pm:uninstall was not found. Pass --root or a @siteAlias in order to r
  un
     Drupal-specific commands.

Below is available drush commands:

Run `drush help [command]` to view command-specific help.  Run `drush topic` to read even more documentation.

 Available commands:
 _global:
   browse                               Display a link to a given path or open
                                        link in a browser.
   config:pull (cpull)                  Export and transfer config from one
                                        environment to another.
   deploy                               Run several commands after performing a
                                        code deployment.
   drupal:directory (dd)                Return the filesystem path for
                                        modules/themes and other key folders.
   entity:updates (entup)               Apply pending entity schema updates.
   generate (gen)                       Generate boilerplate code for
                                        modules/plugins/services etc.
   help                                 Display usage details for a command.
   list                                 List available commands.
   mk:docs                              Build a Markdown document for each
                                        Drush command thats available on a
                                        site.
   runserver (rs, serve)                Runs PHP's built-in http server for
                                        development.
   user:login (uli)                     Display a one time login link for user
                                        ID 1, or another user.
   version                              Show Drush version.
 cache:
   cache:clear (cc)                     Clear a specific cache, or all Drupal
                                        caches.
   cache:get (cg)                       Fetch a cached object and display it.
   cache:rebuild (cr, rebuild)          Rebuild a Drupal 8 site.
   cache:set (cs)                       Cache an object expressed in JSON or
                                        var_export() format.
   cache:tags (ct)                      Invalidate by cache tags.
 core:
   core:edit (conf, config)             Edit drush.yml, site alias, and Drupal
                                        settings.php files.
   core:init (init)                     Enrich the bash startup file with bash
                                        aliases and a smart command prompt.
   core:rsync (rsync)                   Rsync Drupal code or files to/from
                                        another server using ssh.
   core:status (status, st)             An overview of the environment - Drush
                                        and Drupal.
   core:topic (topic)                   Read detailed documentation on a given
                                        topic.
 php:
   php:eval (eval, ev)                  Evaluate arbitrary php code after
                                        bootstrapping Drupal (if available).
   php:script (scr)                     Run php a script after a full Drupal
                                        bootstrap.
 pm:
   pm:security (sec)                    Check Drupal Composer packages for
                                        pending security updates.
   pm:security-php (sec-php)            Check non-Drupal PHP packages for
                                        pending security updates.
 site:
   site:alias (sa)                      Show site alias details, or a list of
                                        available site aliases.
   site:alias-convert (sa-convert, sac) Convert legacy site alias files to the
                                        new yml format.
   site:install (si, sin)               Install Drupal along with
                                        modules/themes/configuration/profile.
   site:set (use)                       Set a site alias that will persist for
                                        the current session.
   site:ssh (ssh)                       Connect to a Drupal site's server via
                                        SSH, and optionally run a shell
                                        command.
 sql:
   sql:cli (sqlc)                       Open a SQL command-line interface using
                                        Drupal's credentials.
   sql:connect                          A string for connecting to the DB.
   sql:create                           Create a database.
   sql:drop                             Drop all tables in a given database.
   sql:dump                             Exports the Drupal DB as SQL using
                                        mysqldump or equivalent.
   sql:query (sqlq)                     Execute a query against a database.
   sql:sync                             Copy DB data from a source site to a
                                        target site. Transfers data via rsync.
 updatedb:
   updatedb (updb)                      Apply any database updates required (as
                                        with running update.php).
   updatedb:status (updbst)             List any pending database updates.

 ! [NOTE] Drupal root not found. Pass --root or a @siteAlias in order to see
 !        Drupal-specific commands.

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes