Error message
- Warning: Illegal string offset 'url' in TCPDF->openHTMLTagHandler() (line 18911 of /opt/drupal7/sites/all/libraries/tcpdf/tcpdf.php).
- Notice: Undefined offset: 1 in theme_print_url_list() (linea 357 di /opt/drupal7/sites/all/modules/print/print.pages.inc).
