Export to Lottie files - text is missing

Support Synfig related help
1

I have created several test files and whenever I export them to a Lottie file the text is not exported but only the shapes.

What is the error?
Program version: 1.4.4 (64-bit)

Here is the download to the testfile:

https://www.dropbox.com/t/baOdWxCK71Fbp3ZX