No such file or directory

[Leonardo88]

I transferred the site from hosting to another hosting, changing the dns, now when I go to access to login I see this error: 

/public_html/vendor/composer/../symfony/symfony/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php): failed to open stream: No such file or directory

in DebugClassLoader.php line 155

at include()in DebugClassLoader.php line 155

at DebugClassLoader->loadClass('Symfony\\Bundle\\FrameworkBundle\\DependencyInjection\\FrameworkExtension')

at spl_autoload_call('Symfony\\Bundle\\FrameworkBundle\\DependencyInjection\\FrameworkExtension')

at class_exists('Symfony\\Bundle\\FrameworkBundle\\DependencyInjection\\FrameworkExtension')in Bundle.php line 200

at Bundle->createContainerExtension()in Bundle.php line 69

at Bundle->getContainerExtension()in Kernel.php line 793

at Kernel->prepareContainer(object(ContainerBuilder))in Kernel.php line 774

at Kernel->buildContainer()in Kernel.php line 642

at Kernel->initializeContainer()in Kernel.php line 135

at Kernel->boot()in Kernel.php line 195

at Kernel->handle(object(Request), 1, false)in index.php line 82

Solutions?

Thank you

[Nickz]

You need also to ajust settings in htaccess, database, clear the caches. Leaving index.php

Secure Your full back up before.