Pivot 4.1.0 - Cannot create property 'text' on string ' '

Hello to all
I purchased the PRO version and I am updating all my pages
the trial version; updating the component PIVOT 4.1.0
I have this Javascript error: Can not create property ‘text’ on string ‘’
someone already had the same problem?
Many thanks

Hello,

Can you please provide the configuration of your Pivot Table? Which version of Webix was in the trial package?

Thank you for the answer;
the same configuration for the 4.0 trial version
work fine and does’nt work for 4.1 pro-version purchased;
error raise when I simply change the reference in tag,
and when I return then prev version the error disappear.
Thanks again for the help
L

A demo or step-by-step scenario to test will be appreciated.

You can use this snippet as a base.