Can't Save the mashup - Error display


#1

Hi,

I can’t save the work done in the mashup, this error displays every time a tried to save the work.


I am using the following academic link: https://ptcu-thingworx74-ui.portal.ptc.io/Thingworx/Composer/
which is the one that is proposed to do the exercise.
Is there any problem with this platfor?

Thanks.

Olatz.