fixes for symfony 4/5 event dispatcher

Author: Aleksei Krichevskii

Persister/QueuePagerPersister.php

@@ -58,7 +58,7 @@ public function insert(PagerInterface $pager, array $options = array())
         $objectPersister = $this->registry->getPersister($options['indexName'], $options['typeName']);
 
         $event = new PrePersistEvent($pager, $objectPersister, $options);
-        $this->dispatcher->dispatch(Events::PRE_PERSIST, $event);
+        $this->dispatcher->dispatch($event, Events::PRE_PERSIST);
         $pager = $event->getPager();
         $options = $event->getOptions();
 
@@ -122,7 +122,7 @@ public function insert(PagerInterface $pager, array $options = array())
                     $errorMessage,
                     $data['options']
                 );
-                $this->dispatcher->dispatch(Events::POST_ASYNC_INSERT_OBJECTS, $event);
+                $this->dispatcher->dispatch($event, Events::POST_ASYNC_INSERT_OBJECTS);
             }
 
             if (microtime(true) > $limitTime) {
@@ -131,6 +131,6 @@ public function insert(PagerInterface $pager, array $options = array())
         }
 
         $event = new PostPersistEvent($pager, $objectPersister, $options);
-        $this->dispatcher->dispatch(Events::POST_PERSIST, $event);
+        $this->dispatcher->dispatch($event, Events::POST_PERSIST);
     }
 }

composer.json

@@ -6,7 +6,7 @@
     "license": "MIT",
     "require": {
         "php": "^7.1",
-        "symfony/framework-bundle": "^3.4|^4.0|^5.0",
+        "symfony/framework-bundle": "^4.0|^5.0",
         "friendsofsymfony/elastica-bundle": "^5.0",
         "enqueue/enqueue-bundle": "^0.10"
     },