Client crash on Level change

Hello. I have a problem,

I have a problem with changing the world.
I wanted all players to be teleported to another world when the timer expired. The problem is that some players crash more often. Do any of you know how I can fix this?

PHP:

if($timeStart<=0)
                            {
                                $timeStart=0;
                                $map = $config->get($arena . "Map1");
                                $this->plugin->getServer()->loadLevel($map);
                                $spawn = $this->plugin->getServer()->getLevelByName($map)->getSafeSpawn();
                                $level->loadChunk($spawn->getFloorX(), $spawn->getFloorZ());

                                $this->plugin->getServer()->getLevelByName($map)->loadChunk($this->plugin->getServer()->getLevelByName($map)->getSafeSpawn()->getFloorX(), $this->plugin->getServer()->getLevelByName($map)->getSafeSpawn()->getFloorZ());
                                foreach($playersIn as $player)
                                {
                                    $player->addTitle(TextFormat::GREEN . $map, $this->messages->get("ingame.goodluck"));
                                    $player->teleport($this->plugin->getServer()->getLevelByName($map)->getSafeSpawn());
                                }
                            }

 

Why teleport the player twice? Just using the second line of code should work. Aside from that, I would guess the issue is relevant to the map itself. Does this ever happen when players teleport to other levels through other means?

 

getSpawnLocation()?

 

Oh, that was a mistake on my part. In my code it is only teleported once. Corrected the line in question. Still, it doesn't change the current situation.