I’ve added a css file that will allow me to show my an image preview with a dropdown field.

body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    text-align: center;
}

.combobox {
    padding: 10px;
    font-size: 16px;
    margin-bottom: 20px;
}

.image-preview {
    display: flex;
    justify-content: center;
    align-items: center;
    border: 2px solid #ccc;
    padding: 20px;
    max-width: 500px;
    height: 300px;
}

.image-preview img {
    max-width: 100%;
    max-height: 100%;
    display: block;
}

I added this JS function to my HTMl page to make it viewable:

document.getElementById('assign_logo').addEventListener('change', function () {
    var selectedValue = this.value;
    var previewImage = document.getElementById('previewImage');

    if (selectedValue) {
        previewImage.src = selectedValue;
        previewImage.style.display = 'block';
    } else {
        previewImage.src = '';
        previewImage.style.display = 'none';
    }
});

Once this was in place, my Select2 function stopped working. I do not understand why. Could someone point out where things went wrong?