PDOException: SQLSTATE[HY000] [1040] Too many connections
 File=/var/www/vhosts/bundderversicherten.de/app/Models/NestedSet.php
 Line=50
#0 /var/www/vhosts/bundderversicherten.de/app/Models/NestedSet.php(50): PDO->__construct()
#1 /var/www/vhosts/bundderversicherten.de/app/Models/Tree.php(88): App\Models\NestedSet->__construct()
#2 /var/www/vhosts/bundderversicherten.de/app/Models/Tree.php(84): App\Models\Tree->getNestedSet()
#3 [internal function]: App\Models\Tree->initialize()
#4 [internal function]: Phalcon\Mvc\Model\Manager->initialize()
#5 [internal function]: Phalcon\Mvc\Model->__construct()
#6 [internal function]: Phalcon\Mvc\Model\Manager->load()
#7 [internal function]: Phalcon\Mvc\Model\Query->_prepareSelect()
#8 [internal function]: Phalcon\Mvc\Model\Query->parse()
#9 [internal function]: Phalcon\Mvc\Model\Query->execute()
#10 /var/www/vhosts/bundderversicherten.de/app/Models/Tree.php(427): Phalcon\Mvc\Model::findFirst()
#11 /var/www/vhosts/bundderversicherten.de/app/Controllers/Web/ContentController.php(559): App\Models\Tree::findNaviByPermaAndDepth()
#12 /var/www/vhosts/bundderversicherten.de/app/Controllers/Web/ContentController.php(544): App\Controllers\Web\ContentController->setNavi()
#13 /var/www/vhosts/bundderversicherten.de/app/Controllers/Web/ContentController.php(448): App\Controllers\Web\ContentController->setContent()
#14 /var/www/vhosts/bundderversicherten.de/app/Controllers/Web/ContentController.php(176): App\Controllers\Web\ContentController->setView()
#15 [internal function]: App\Controllers\Web\ContentController->indexAction()
#16 [internal function]: Phalcon\Dispatcher\AbstractDispatcher->callActionMethod()
#17 [internal function]: Phalcon\Dispatcher\AbstractDispatcher->dispatch()
#18 /var/www/vhosts/bundderversicherten.de/httpdocs/index.php(94): Phalcon\Mvc\Application->handle()
#19 {main}