Fatal error: Uncaught DOMException: Invalid Character Error in /var/www/treegraph/data/www/treegraph4/driver/dom/domxml.php:39 Stack trace: #0 /var/www/treegraph/data/www/treegraph4/driver/dom/domxml.php(39): DOMDocument->createElement('') #1 /var/www/treegraph/data/www/treegraph4/_func.php(2370): domxml->start_element('', Array) #2 /var/www/treegraph/data/www/treegraph4/_func.php(2377): toXmlx(Object(domxml), '', Array, Array) #3 /var/www/treegraph/data/www/treegraph4/_func.php(2377): toXmlx(Object(domxml), 'prod_length', Array, Array) #4 /var/www/treegraph/data/www/treegraph4/_func.php(2377): toXmlx(Object(domxml), 'catm', Array, Array) #5 /var/www/treegraph/data/www/treegraph4/_func.php(3196): toXmlx(Object(domxml), 'handler', Array, Array) #6 /var/www/treegraph/data/www/treegraph4/_func.php(466): make_page() #7 /var/www/treegraph/data/www/k2.expert/index.php(820): start() #8 {main} thrown in /var/www/treegraph/data/www/treegraph4/driver/dom/domxml.php on line 39