Working fine on localhost but not on the production server

Hello,

I have this code which works fine on localhost, but it generates a 500 error on the production server when I click on the submit button. Furthermore when I type text in the textarea, the $loading property becomes true on every new caracter whereas it doesn't do that on localhost.

What could be the source of the problem ?

Here is my view and the controller.

<div class="flex flex-col gap-4">
    <x-info-card>
        Seules les balises ci-contre seront analysées : {{ implode(', ', $tags) }}. Toutes les autres balises seront supprimées.
    </x-info-card>

    <div class="flex flex-col gap-1">
        <label class="flex justify-between items-center text-gray-500">
            Texte à paraphraser
            @if ($original_text)
                <span class="transition-all text-sky-300 cursor-pointer" wire:click="init">
                    <i class="fa-solid fa-trash-alt"></i> Réinitialiser
                </span>
            @endif
        </label>
        <textarea class="outline-none px-3 py-1 border border-sky-300 rounded-lg" name="text" rows="5" wire:ignore wire:model="original_text"></textarea>
        @error('text')
            <span class="text-sm text-red-500">{{ $message }}</span>
        @enderror
    </div>

    <x-button wire:click="submit">
        Paraphraser
    </x-button>

    <div wire:loading.delay><x-loader></x-loader></div>

    @if ($paraphrased_text)
        <div
            x-data="{
                copyToClipboard() {
                    document.getElementById('result').select();
                    document.execCommand('copy');
                }
            }"
            class="flex flex-col gap-1"
        >
            <label class="flex justify-between items-center text-gray-500">
                Texte paraphrasé
                @if ($paraphrased_text)
                    <span @click="copyToClipboard" class="transition-all text-sky-300 cursor-pointer">
                        <i class="fa-solid fa-copy"></i> Copier
                    </span>
                @endif
            </label>
                <textarea id="result" class="outline-none px-3 py-1 border border-sky-300 rounded-lg read-only" rows="10" wire:ignore wire:model="paraphrased_text"></textarea>
        </div>
    @endif

    <x-button-link href="{{ route('nlp-cloud.options') }}" class="text-center">
        Retourner à la liste des options
    </x-button-link>
</div>

<?php

namespace App\Http\Livewire\NlpCloud;

use App\Services\NlpCloudService;
use Illuminate\Support\Str;
use Livewire\Component;
use NlpCloud;
use PHPHtmlParser\Dom as Dom;
use PHPHtmlParser\Options as Options;

class Paraphrase extends Component
{
    public $loading = false;

    public string $original_text = '';
    public string $paraphrased_text = '';
    public string $message = '';

    public $tags = ['h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'p', 'ul', 'ol', 'li'];
    public $analysedTags = ['h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'p', 'li'];
    public $minLength = 30;

    public function submit()
    {
        $client = (new NlpCloudService)->getClient();

        if ($client) {
            $this->loading = true;

            $original_text = Str::of($this->original_text)->trim();

            // Vérifie si le texte fourni contient des balises
            if ($original_text != strip_tags($original_text)) {
                $original_text = strip_tags($original_text, $this->tags);

                $dom = new Dom;
                // $dom->setOptions([
                //     'preserveLineBreaks' => true,
                // ]);
                $dom->loadStr($original_text);

                foreach ($this->analysedTags as $tag) {
                    foreach ($dom->find($tag) as $item) {
                        $text = Str::of($item->text)->trim();

                        if (strlen($text) >= $this->minLength) {
                            if ($text != '') {
                                $result = $client->paraphrasing($text)->paraphrased_text;
                                $item->firstChild()->setText($result);
                            }
                        }
                    }
                }

                $this->paraphrased_text = $dom->outerHtml;
            } else {
                if (strlen($original_text) >= $this->minLength) {
                    $this->paraphrased_text = $client->paraphrasing($original_text)->paraphrased_text;
                } else {
                    $this->paraphrased_text = $original_text;
                }
            }
        } else {
            $this->message = 'Erreur : le service NlpCloud n\'a pas pu être initialisé.';
        }

        $this->loading = false;

    }

    public function init()
    {
        $this->reset([
            'original_text',
            'paraphrased_text',
            'message'
        ]);
    }

    public function render()
    {
        return view('livewire.nlp-cloud.paraphrase');
    }
}

Do you see something wrong ?

Thanks a lot ;).

V