Why are you using PARQUEST , can you replace it with parquet and let me know what error you are getting exactly .also what i understood from you is that you have done with the bronze and silver layer table now you want to create gold layer and gold table , so before moving out to the final conclusion i have some doubts .

1-Bronze and silver table are managed or external table ?

2-Bronze and silver table are delta table or parquet?

3-You want to create a external gold table in parquet format ?