Problem while creating an structure based on Datasmith Metadata


I’m trying to make a json structure based on all the metadata from all the parts that my Datasmith file is composed of.

When I use a little sized Datasmith file it works perfectly, but using a file that is composed of about 6000 objects, it throws me an infinite loop error. I can’t understand why, because the blueprint is the same always.

My blueprint is here:

Any idea about what can I’'m doing wrong?

Thank you