metagenome_predictions.py for PICRUSt1 and qiime2

Hello Everyone!

I am trying to use PICRUSt1 for Qiime2(2018.4) generated table. I want to know if there is any fucntion similar to metagenome_predictions.py for qiime2 to suggest the relation between the identified OTUs and the predicted metagenome functions? Or is there any other way to do this kind of analysis?

P.S. I tried PICRUSt 2 but had multiple issues so went back to PICRUSt 1