You need to set your Text Aggregator’s “Source Module” to the Text Parser module.
This will “wait” for all the operations to complete before proceeding.
Hope this helps! Let me know if there are any further questions or issues.
— @samliew
P.S.: Did you know, the concepts of about 70% of questions asked on this forum are already covered in the Make Academy. Investing some effort into it will save you lots of time and frustration using Make later!