Unexpected Token l in ajax request

Hi! This is my first post
I using contact form 7 for my forms, when I click “Send”, show the loading gif but nothing of error or successfull message. When I debug the ajax request, it show this error on this line (<div class=”ajax-error”>Unexpected token l</div>). The funny thing is that this error only appears in a linux production environment (Ubuntu Server), in windows development environment works perfect.

This is the code where de error is throw

error: function(xhr, status, error, $form) {
var e = $(‘<div class=”ajax-error”></div>’).text(error.message);
$form.after(e);
}

Please help me with this. Thanks

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