Remove package from laravel-6.2 existing project an error occurred

Remove pragmarx/tracker package from laravel project by the following composer command

composer remove pragmarx/tracker

It's remove successfully but the below error shown. Even though composer update the error not fix.

Illuminate\Contracts\Container\BindingResolutionException
Target class [PragmaRX\Tracker\Vendor\Laravel\Middlewares\Tracker] does not exist. 

How can I fix this error ? and which method to follow to completely remove any unused packages from laravel?

From the documentation on the repo:

> # Installing
> Require the tracker package by executing the following command in your command line:
>
> composer require pragmarx/tracker
>
> Add the service provider to your app/config/app.php:
> php
> PragmaRX\Tracker\Vendor\Laravel\ServiceProvider::class,
>
> Add the alias to the facade on your app/config/app.php:
> php
> 'Tracker' => 'PragmaRX\Tracker\Vendor\Laravel\Facade',
>
> ## Publish tracker configuration:
> ### Laravel 4
>
> php artisan config:publish pragmarx/tracker
>
> ### Laravel 5
>
> php artisan vendor:publish --provider="PragmaRX\Tracker\Vendor\Laravel\ServiceProvider"
>
> ## Enable the Middleware (Laravel 5)
> Open the newly published config file found at app/config/tracker.php and enable use_middleware:
>
> 'use_middleware' => true,
>
> ## Add the Middleware to Laravel Kernel (Laravel 5)
> Open the file app/Http/Kernel.php and add the following to your web middlewares:
> php
> \PragmaRX\Tracker\Vendor\Laravel\Middlewares\Tracker::class,
>
> ...

If you removed the package, make sure to

1. delete the config/tracker.php file
2. remove the line PragmaRX\Tracker\Vendor\Laravel\ServiceProvider::class from config/app.php
3. remove the line 'Tracker' => 'PragmaRX\Tracker\Vendor\Laravel\Facade', from config/app.php
4. remove the line \PragmaRX\Tracker\Vendor\Laravel\Middlewares\Tracker::class, from app/Http/Kernel.php