simple vChart Line Chart won't display

Just edited the vchart but when i click preview page is blank.

has anyone had this problem.

Hello,
It seems you are selecting wrong parameters for the data values or have fetched wrong columns in case if you have written SQL query. Please find the documentation here: www.wdmtech.com/vchart-documentation If you still find issues, Please share your backend & FTP login credentials via Contact us form, We'll look into it.