Could not find driver (SQL: select * from "tables")

Can you show your .env and app.php ?

@MUNAZZIL - .env

APP_NAME=[app_name]
APP_ENV=production
APP_KEY=base64:xGPMJT3+CSSVsMhGSL8evW8uUlkbpx06+w4TDqJyyJQ=
APP_DEBUG=false
APP_URL=[app_url]

LOG_CHANNEL=stack

DB_CONNECTION=pgsql
DB_HOST=127.0.0.1
DB_PORT=5432
DB_DATABASE=[db_name]
DB_USERNAME=[db_username]
DB_PASSWORD=[db_password]

BROADCAST_DRIVER=log
CACHE_DRIVER=file
QUEUE_CONNECTION=sync
SESSION_DRIVER=file
...

app.php

<?php

return [

    'name' => env('APP_NAME', 'Laravel'),

    'env' => env('APP_ENV', 'production'),

    'debug' => env('APP_DEBUG', false),

    'url' => env('APP_URL', 'http://localhost'),

    'asset_url' => env('ASSET_URL', null),

    'timezone' => 'UTC',

    'locale' => 'en',

    'fallback_locale' => 'en',

    'faker_locale' => 'en_US',

    'key' => env('APP_KEY'),

    'cipher' => 'AES-256-CBC',

    'providers' => [

        /*
         * Laravel Framework Service Providers...
         */
        Illuminate\Auth\AuthServiceProvider::class,
        Illuminate\Broadcasting\BroadcastServiceProvider::class,
        Illuminate\Bus\BusServiceProvider::class,
        Illuminate\Cache\CacheServiceProvider::class,
        Illuminate\Foundation\Providers\ConsoleSupportServiceProvider::class,
        Illuminate\Cookie\CookieServiceProvider::class,
        Illuminate\Database\DatabaseServiceProvider::class,
        Illuminate\Encryption\EncryptionServiceProvider::class,
        Illuminate\Filesystem\FilesystemServiceProvider::class,
        Illuminate\Foundation\Providers\FoundationServiceProvider::class,
        Illuminate\Hashing\HashServiceProvider::class,
        Illuminate\Mail\MailServiceProvider::class,
        Illuminate\Notifications\NotificationServiceProvider::class,
        Illuminate\Pagination\PaginationServiceProvider::class,
        Illuminate\Pipeline\PipelineServiceProvider::class,
        Illuminate\Queue\QueueServiceProvider::class,
        Illuminate\Redis\RedisServiceProvider::class,
        Illuminate\Auth\Passwords\PasswordResetServiceProvider::class,
        Illuminate\Session\SessionServiceProvider::class,
        Illuminate\Translation\TranslationServiceProvider::class,
        Illuminate\Validation\ValidationServiceProvider::class,
        Illuminate\View\ViewServiceProvider::class,

        /*
         * Package Service Providers...
         */
        Laravel\Socialite\SocialiteServiceProvider::class,
        Collective\Html\HtmlServiceProvider::class,
        Intervention\Image\ImageServiceProvider::class,

        /*
         * Application Service Providers...
         */
        App\Providers\AppServiceProvider::class,
        App\Providers\AuthServiceProvider::class,
        // App\Providers\BroadcastServiceProvider::class,
        App\Providers\EventServiceProvider::class,
        App\Providers\RouteServiceProvider::class,

    ],

    /*
    |--------------------------------------------------------------------------
    | Class Aliases
    |--------------------------------------------------------------------------
    |
    | This array of class aliases will be registered when this application
    | is started. However, feel free to register as many as you wish as
    | the aliases are "lazy" loaded so they don't hinder performance.
    |
    */

    'aliases' => [

        'App' => Illuminate\Support\Facades\App::class,
        'Artisan' => Illuminate\Support\Facades\Artisan::class,
        'Auth' => Illuminate\Support\Facades\Auth::class,
        'Blade' => Illuminate\Support\Facades\Blade::class,
        'Broadcast' => Illuminate\Support\Facades\Broadcast::class,
        'Bus' => Illuminate\Support\Facades\Bus::class,
        'Cache' => Illuminate\Support\Facades\Cache::class,
        'Config' => Illuminate\Support\Facades\Config::class,
        'Cookie' => Illuminate\Support\Facades\Cookie::class,
        'Crypt' => Illuminate\Support\Facades\Crypt::class,
        'DB' => Illuminate\Support\Facades\DB::class,
        'Eloquent' => Illuminate\Database\Eloquent\Model::class,
        'Event' => Illuminate\Support\Facades\Event::class,
        'File' => Illuminate\Support\Facades\File::class,
        'Gate' => Illuminate\Support\Facades\Gate::class,
        'Hash' => Illuminate\Support\Facades\Hash::class,
        'Lang' => Illuminate\Support\Facades\Lang::class,
        'Log' => Illuminate\Support\Facades\Log::class,
        'Mail' => Illuminate\Support\Facades\Mail::class,
        'Notification' => Illuminate\Support\Facades\Notification::class,
        'Password' => Illuminate\Support\Facades\Password::class,
        'Queue' => Illuminate\Support\Facades\Queue::class,
        'Redirect' => Illuminate\Support\Facades\Redirect::class,
        'Redis' => Illuminate\Support\Facades\Redis::class,
        'Request' => Illuminate\Support\Facades\Request::class,
        'Response' => Illuminate\Support\Facades\Response::class,
        'Route' => Illuminate\Support\Facades\Route::class,
        'Schema' => Illuminate\Support\Facades\Schema::class,
        'Session' => Illuminate\Support\Facades\Session::class,
        'Storage' => Illuminate\Support\Facades\Storage::class,
        'URL' => Illuminate\Support\Facades\URL::class,
        'Validator' => Illuminate\Support\Facades\Validator::class,
        'View' => Illuminate\Support\Facades\View::class,
        'Uuid' => Webpatser\Uuid\Uuid::class,
        'Socialite' => Laravel\Socialite\Facades\Socialite::class,
        'Form' => Collective\Html\FormFacade::class,
        'Html' => Collective\Html\HtmlFacade::class,
        'Image' => Intervention\Image\Facades\Image::class

    ],

];

Change in both file APP_DEBUG=false as like below and check,

.env

      APP_DEBUG=true

app.php

 'debug' => env('APP_DEBUG', true),

@MUNAZZIL - okay, I have this error :

 catch (Exception $e) {
    throw new QueryException(
        $query, $this->prepareBindings($bindings), $e
    );
}

arguments: "could not find driver(SQL: select * from "tables")

Use below one in following folder.

    paperwork/frontend/vendor/laravel/framework/src/Illuminate/Database/Connection.php

add begining of this

    use Illuminate\Database\QueryException;

add this in your .htaccess file.

 # php -- BEGIN cPanel-generated handler, do not edit
  # Set the “ea-php71” package as the default “PHP” programming language.
   <IfModule mime_module>
     AddHandler application/x-httpd-ea-php71 .php .php7 .phtml
   </IfModule>
  # php -- END cPanel-generated handler, do not edit and change

DB_USERNAME=something
DB_PASSWORD=something 

This answer is too late but when I am deploying the website to the server I am facing the same issue. Shared hosting provider using PHP 7.4 but on the laravel it's the site on 7.3. I fixed this issue by commenting on the code on .htaccess file check out this - www.prnt.sc/26k5ip3