Laravel 8.x CSRF Issue Resolution

I'm in need of a Laravel developer who can help me resolve a persistent logged out issue on my Laravel 8.x project. This issue is occurring when payment gateway sent response as post method . So here there is no csrf in post data. In that case I added route in except array in App\Http\Middleware\VerifyCsrfToken page. it is working fine. Automatically logged out from website. I mentioned route like this but no use.

Route::group(['middleware' => 'auth'], function() {


Route::prefix('users')->group(function () {
Route::post('/bill_response_url/{bill_id}', 'Admin\PaymentGatewayController@getBillResponse')->name('bill_response_url')->middleware('excludecsrf');;

})[

});

The route was mentioned

Ideal Skills and Experience:
- In-depth knowledge and practical experience with Laravel 8.x
- Proven track record of resolving CSRF issues
- Strong understanding of session management
- Ability to troubleshoot and fix issues in a timely manner