[PHPExcel_Exception] 
Invalid character found in sheet title (0)
/home/d/deltatop/deltatop.ru/public_html/local/modules/seoexpert.delta/vendor/phpoffice/phpexcel/Classes/PHPExcel/Worksheet.php:467
#0: PHPExcel_Worksheet::_checkSheetTitle(string)
	/home/d/deltatop/deltatop.ru/public_html/local/modules/seoexpert.delta/vendor/phpoffice/phpexcel/Classes/PHPExcel/Worksheet.php:842
#1: PHPExcel_Worksheet->setTitle(string, boolean)
	/home/d/deltatop/deltatop.ru/public_html/local/modules/seoexpert.delta/vendor/phpoffice/phpexcel/Classes/PHPExcel/Worksheet.php:345
#2: PHPExcel_Worksheet->__construct(object, string)
	/home/d/deltatop/deltatop.ru/public_html/local/modules/seoexpert.delta/lib/exportcatalog.php:49
#3: Seoexpert\Delta\ExportCatalog->process()
	/home/d/deltatop/deltatop.ru/public_html/price-lists/download.php:11