Message Error

exception 'Symfony\Component\Security\Core\Exception\BadCredentialsException' with message 'Bad credentials' in C:\xampp\htdocs\mgr\4_symfony\vendor\symfony\src\Symfony\Component\Security\Core\Authentication\Provider\UserAuthenticationProvider.php:83 Stack trace: #0 C:\xampp\htdocs\mgr\4_symfony\vendor\symfony\src\Symfony\Component\HttpFoundation\SessionStorage\NativeSessionStorage.php(87): session_start() #1 C:\xampp\htdocs\mgr\4_symfony\vendor\symfony\src\Symfony\Component\HttpFoundation\Session.php(64): Symfony\Component\HttpFoundation\SessionStorage\NativeSessionStorage->start() #2 C:\xampp\htdocs\mgr\4_symfony\vendor\symfony\src\Symfony\Bundle\FrameworkBundle\EventListener\SessionListener.php(56): Symfony\Component\HttpFoundation\Session->start() #3 [internal function]: Symfony\Bundle\FrameworkBundle\EventListener\SessionListener->onKernelRequest(Object(Symfony\Component\HttpKernel\Event\GetResponseEvent)) #4 C:\xampp\htdocs\mgr\4_symfony\vendor\symfony\src\Symfony\Bundle\FrameworkBundle\Debug\TraceableEventDispatcher.php(82): call_user_func(Array, Object(Symfony\Component\HttpKernel\Event\GetResponseEvent)) #5 C:\xampp\htdocs\mgr\4_symfony\vendor\symfony\src\Symfony\Component\EventDispatcher\EventDispatcher.php(49): Symfony\Bundle\FrameworkBundle\Debug\TraceableEventDispatcher->doDispatch(Array, 'kernel.request', Object(Symfony\Component\HttpKernel\Event\GetResponseEvent)) #6 C:\xampp\htdocs\mgr\4_symfony\vendor\symfony\src\Symfony\Bundle\FrameworkBundle\ContainerAwareEventDispatcher.php(118): Symfony\Component\EventDispatcher\EventDispatcher->dispatch('kernel.request', Object(Symfony\Component\HttpKernel\Event\GetResponseEvent)) #7 C:\xampp\htdocs\mgr\4_symfony\vendor\symfony\src\Symfony\Component\HttpKernel\HttpKernel.php(98): Symfony\Bundle\FrameworkBundle\ContainerAwareEventDispatcher->dispatch('kernel.request', Object(Symfony\Component\HttpKernel\Event\GetResponseEvent)) #8 C:\xampp\htdocs\mgr\4_symfony\vendor\symfony\src\Symfony\Component\HttpKernel\HttpKernel.php(71): Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object(Symfony\Component\HttpFoundation\Request), 1) #9 C:\xampp\htdocs\mgr\4_symfony\vendor\symfony\src\Symfony\Bundle\FrameworkBundle\HttpKernel.php(44): Symfony\Component\HttpKernel\HttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #10 C:\xampp\htdocs\mgr\4_symfony\app\bootstrap.php.cache(547): Symfony\Bundle\FrameworkBundle\HttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #11 C:\xampp\htdocs\mgr\4_symfony\web\app_dev.php(24): Symfony\Component\HttpKernel\Kernel->handle(Object(Symfony\Component\HttpFoundation\Request)) #12 {main}