Not working on Magento 2.3.5

[jfabiano]

Hi,

I'm getting this error:
[2022-01-01 19:04:20] main.DEBUG: Request validation failed for action "BulkGate\Magesms\Controller\Adminhtml\Sign\In\Interceptor" {"exception":"[object] (Magento\Framework\App\Request\InvalidRequestException(code: 0): Invalid request received at /var/www/html/vendor/magento/module-backend/App/Request/BackendValidator.php:176)"} []

When I try to login, nothing happens.

Can you help me please?