Hola @Luisejo ,
Este es el error que aparece en cuanto tiro el debug:
(1/1) ContextErrorException
Notice: SessionHandler::gc(): ps_files_cleanup_dir: opendir(/var/cpanel/php/sessions/ea-php72) failed: Permission denied (13)
in StrictSessionHandler.php line 101
at StrictSessionHandler->gc(1440)
in SessionHandlerProxy.php line 83
at SessionHandlerProxy->gc(1440)
at session_start()
in NativeSessionStorage.php line 145
at NativeSessionStorage->start()
in NativeSessionStorage.php line 295
at NativeSessionStorage->getBag('attributes')
in Session.php line 258
at Session->getBag('attributes')
in Session.php line 280
at Session->getAttributeBag()
in Session.php line 73
at Session->get('_security_main')
in ContextListener.php line 89
at ContextListener->handle(object(GetResponseEvent))
in WrappedListener.php line 46
at WrappedListener->handle(object(GetResponseEvent))
in TraceableFirewallListener.php line 35
at TraceableFirewallListener->handleRequest(object(GetResponseEvent), object(Generator))
in Firewall.php line 84
at Firewall->onKernelRequest(object(GetResponseEvent))
in FirewallListener.php line 48
at FirewallListener->onKernelRequest(object(GetResponseEvent), 'kernel.request', object(TraceableEventDispatcher))
in WrappedListener.php line 115
at WrappedListener->__invoke(object(GetResponseEvent), 'kernel.request', object(TraceableEventDispatcher))
in EventDispatcher.php line 212
at EventDispatcher->doDispatch(array(object(WrappedListener), object(WrappedListener), object(WrappedListener), object(WrappedListener), object(WrappedListener), object(WrappedListener), object(WrappedListener), object(WrappedListener), object(WrappedListener), object(WrappedListener), object(WrappedListener), object(WrappedListener), object(WrappedListener), object(WrappedListener)), 'kernel.request', object(GetResponseEvent))
in EventDispatcher.php line 44
at EventDispatcher->dispatch('kernel.request', object(GetResponseEvent))
in TraceableEventDispatcher.php line 143
at TraceableEventDispatcher->dispatch('kernel.request', object(GetResponseEvent))
in HttpKernel.php line 127
at HttpKernel->handleRaw(object(Request), 1)
in HttpKernel.php line 68
at HttpKernel->handle(object(Request), 1, false)
in Kernel.php line 200
at Kernel->handle(object(Request), 1, false)
in index.php line 86
saludos.