contest_image_2016/1/PAGMAUA4_Sala d\'aspetto.jpg isn't a valid image

<br /><br />&nbsp;&nbsp;FILE: /web/htdocs/www.fotoclublegru.it/home/concorso-fotografico/resize.php
<br />&nbsp;&nbsp;LINE: 23

<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;FILE: /web/htdocs/www.fotoclublegru.it/home/concorso-fotografico/includes/classes/imageTransform.class.php
<br />&nbsp;&nbsp;&nbsp;&nbsp;LINE: 227
<br />