Minimal reproduction: https://jsfiddle.net/39f1wajb/
Trying to export to Excel produces an error:
Export XLS error: TypeError: Cannot read property 'filter' of undefined
Thank you for pointing this out to us and for providing an example for illustration.
The issue is reproducible on our end.
Our team is working on a solution to this problem and the fix will be provided in the minor release with the ETA 15th of July.
Please let us know if you have further questions.
Thanks for the response; looking forward for the fix.
We are happy to let you know that the issue with Excel export failing in flat form was fixed.
This is included in the 2.7.10 version of Flexmonster: https://www.flexmonster.com/release-notes/.
You are welcome to update the component.
Here is our updating to the latest version tutorial for guidance: https://www.flexmonster.com/doc/updating-to-the-latest-version/.
Please contact us in case any questions arise.