FatalErrorException: Error: Call to a member function isStarted() on a non-object in /var/www/html/ezp52/vendor/ezsystems/ezpublish-kernel/eZ/Bundle/EzPublishRestBundle/EventListener/RestListener.php line 125

1 in /var/www/html/ezp52/vendor/ezsystems/ezpublish-kernel/eZ/Bundle/EzPublishRestBundle/EventListener/RestListener.php line 125
2 at ErrorHandler->handleFatal() in /var/www/html/ezp52/vendor/symfony/symfony/src/Symfony/Component/Debug/ErrorHandler.php line 0
3 at RestListener->onKernelRequest() in /var/www/html/ezp52/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/Debug/TraceableEventDispatcher.php line 450
4 at ??call_user_func:{/var/www/html/ezp52/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/Debug/TraceableEventDispatcher.php:450}() in /var/www/html/ezp52/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/Debug/TraceableEventDispatcher.php line 450
5 at ??Symfony\Component\HttpKernel\Debug\{closure}() in /var/www/html/ezp52/ezpublish/cache/dev/classes.php line 1809
6 at ??call_user_func:{/var/www/html/ezp52/ezpublish/cache/dev/classes.php:1809}() in /var/www/html/ezp52/ezpublish/cache/dev/classes.php line 1809
7 at EventDispatcher->doDispatch() in /var/www/html/ezp52/ezpublish/cache/dev/classes.php line 1742
8 at EventDispatcher->dispatch() in  /var/www/html/ezp52/ezpublish/cache/dev/classes.php line 1906
9 at ContainerAwareEventDispatcher->dispatch() in /var/www/html/ezp52/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/Debug/TraceableEventDispatcher.php line 139
10 at TraceableEventDispatcher->dispatch() in /var/www/html/ezp52/ezpublish/bootstrap.php.cache line 2833
11 at HttpKernel->handleRaw() in /var/www/html/ezp52/ezpublish/bootstrap.php.cache line 2818
12 at HttpKernel->handle() in /var/www/html/ezp52/ezpublish/bootstrap.php.cache line 2947
13 at ContainerAwareHttpKernel->handle() in /var/www/html/ezp52/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/EventListener/ExceptionListener.php line 68
14 at ExceptionListener->onKernelException() in /var/www/html/ezp52/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/Debug/TraceableEventDispatcher.php line 450
15 at ??call_user_func:{/var/www/html/ezp52/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/Debug/TraceableEventDispatcher.php:450}() in /var/www/html/ezp52/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/Debug/TraceableEventDispatcher.php line 450
16 at ??Symfony\Component\HttpKernel\Debug\{closure}() in /var/www/html/ezp52/ezpublish/cache/dev/classes.php line 1809
17 at ??call_user_func:{/var/www/html/ezp52/ezpublish/cache/dev/classes.php:1809}() in /var/www/html/ezp52/ezpublish/cache/dev/classes.php line 1809
18 at EventDispatcher->doDispatch() in /var/www/html/ezp52/ezpublish/cache/dev/classes.php line 1742
19 at EventDispatcher->dispatch() in /var/www/html/ezp52/ezpublish/cache/dev/classes.php line 1906
20 at ContainerAwareEventDispatcher->dispatch() in /var/www/html/ezp52/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/Debug/TraceableEventDispatcher.php line 139
21 at TraceableEventDispatcher->dispatch() in /var/www/html/ezp52/ezpublish/bootstrap.php.cache line 2870
22 at HttpKernel->handleException() in /var/www/html/ezp52/ezpublish/bootstrap.php.cache line 2823
23 at HttpKernel->handle() in /var/www/html/ezp52/ezpublish/bootstrap.php.cache line 2947
24 at ContainerAwareHttpKernel->handle() in /var/www/html/ezp52/ezpublish/bootstrap.php.cache line 2249
25 at Kernel->handle() in /var/www/html/ezp52/vendor/ezsystems/ezpublish-kernel/eZ/Bundle/EzPublishCoreBundle/Kernel.php line 62
26 at Kernel->handle() in /var/www/html/ezp52/web/index.php line 64
27 at ??{main}() in /var/www/html/ezp52/web/index.php line 0