[PHPExcel_Exception] Maximum 31 characters allowed in sheet title. (0) /home/n/nvinvi/nvi_201801/public_html/local/php_interface/PHPExcel/PHPExcel/Worksheet.php:456 #0: PHPExcel_Worksheet::checkSheetTitle(string) /home/n/nvinvi/nvi_201801/public_html/local/php_interface/PHPExcel/PHPExcel/Worksheet.php:828 #1: PHPExcel_Worksheet->setTitle(string) /home/n/nvinvi/nvi_201801/public_html/local/classes/Catalog/CatalogExporter.php:158 #2: Et\Catalog\CatalogExporter->exportSection(array) /home/n/nvinvi/nvi_201801/public_html/local/classes/Catalog/CatalogExporter.php:53 #3: Et\Catalog\CatalogExporter->exportSections() /home/n/nvinvi/nvi_201801/public_html/local/classes/Catalog/ExportfileController.php:98 #4: Et\Catalog\ExportfileController->generateExportfile() /home/n/nvinvi/nvi_201801/public_html/local/classes/Catalog/ExportfileController.php:59 #5: Et\Catalog\ExportfileController->download() /home/n/nvinvi/nvi_201801/public_html/catalog/download.php:3