'ckeditor 4.18.0 does not want to display on phone browsers anymore

My cKdeditor 4.18.0 installed from a CDN, doesn't want to work anymore on my website from the browsers of my phone and PC, what can cause this problem please?

Here is my code:

Header

<script src="https://cdn.ckeditor.com/4.18.0/standard/ckeditor.js"></script>

Here the code HTML

<div class="evvw87y0 css-1v72kp5-ContactForm et2r1rz0">
                    <div class="css-design-field-input-textarea">
                        <label for="about_you" class="css-design-label-sign-up"><?= language('_REGISTER_LABEL_ABOUT_YOU') ?></label>
                    </div>
                    <div class="css-div-search-input-articles izivoAbc" name="about_you" id="about_you"></div>
                    <span id="about_you_error" class="text-danger"></span>
                </div>

Footer

CKEDITOR.replace("about_you", {
    filebrowserUploadUrl: "/upload.php",
    filebrowserImageUploadUrl: "/upload.php",
    filebrowserUploadMethod: "form"
})

Please help me?



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Source: Stack Overflow

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