ODK briefcase make few time to export data

Hi all,
I present you my problem which is summarized on this picture


In fact, in the Data folder Data.zip (78.7 KB) are the forms and I easily get to the export step which takes up a lot of my time and does not offer any results.

Could someone help me solve this problem? Or is it a software-related problem?

Thanks!!!

You used a function called called duration() that the core ODK tools do not know about. My guess is you are using SurveyCTO? SurveyCTO isn't compatible with ODK, so you should contact them for help at https://www.surveycto.com/support.

Hi Yanokwa,

Great!!!