I discovered a possible bug
that when we export a report which contains a Pie Chart to .CSV format we get the error
Fatal error: Uncaught ValueError: Unknown format specifier "{" in /var/www/html/mydbr/lib/utils.php:2916 Stack trace: #0 /var/www/html/mydbr/lib/utils.php(2916): sprintf() #1 /var/www/html/mydbr/lib/utils.php(3207): Cell_formatter::format_nbr_printf() #2 /var/www/html/mydbr/apps/showReport.php(6641): FormatCell() #3 /var/www/html/mydbr/apps/showReport.php(7796): mydbrResultSet->GetFormattedCol() #4 /var/www/html/mydbr/apps/showReport.php(10021): HandleRow() #5 /var/www/html/mydbr/apps/showReport.php(9): sg_load() #6 /var/www/html/mydbr/report.php(550): require_once('...') #7 /var/www/html/mydbr/report.php(9): sg_load() #8 {main} thrown in /var/www/html/mydbr/lib/utils.php on line 2916