Messages randomly not being sent

[KadTheHunter]

I'm following the instructions, and am using this code:

public function dChat(PlayerChatEvent $event) : void{
        $webHook = new Webhook("<my webhook is here>");
        $playerName = $event->getPlayer()->getDisplayName();
        $message = $event->getMessage();
        $message = str_replace('@', '', $event->getMessage());
        $msg = new Message();
        $msg->setContent($playerName . ": " . $message);
        $webHook->send($msg);
    }

Some messages will get sent to the channel, others will not. When they do not, it says this in console:
[Server thread/ERROR]: [DiscordWebhookAPI] Got error:

now I looked at the code, and when that message sends there should be a response included, except... there isn't. The message doesn't get sent to discord, and there just isn't any error in console beyond what I put above.

Am extremely confused with why this is happening, as I appear to be doing everything correctly.

[CortexPE]

The error message is directly from discord API's response.

I'll include an HTTP response code to aid this, though I'm not sure why they aren't sending a response message.