netfunnel error

[Juan Pablo Alzate-Granados]

Hello,

I am replicating the exercise mentioned in the article titled "Network meta-analysis: application and practice using Stata"
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5733388/


However, the graph appears blank when applying the corresponding command for funnel plot.

netfunnel diff se t1 t2, random bycomparison

Are there any extra steps I'm skipping or any extra commands to install?

Thank you very much!

[Jan Valentin]

Install the package metan:

. ssc install metan