Required R,Statistics freelancer for Sample size calculation for non-parametric data job

I need a sample size calculation performed on non-parametric data (absolute error) as requested by the reviewer for a scientific study I have submitted.
The study is looking at the absolute error of different prediction models using the same data for each prediction model (i.e. paired). I have found differing opinions on how to best perform this sample size calculation so am looking for someone to provide statistical guidance. It would be helpful to have sample size calculations for a difference of 5%, 10%, 15% and 20% using a significance level of p<0.05.
I am looking for the sample size calculation as well as details and rationale for how this was performed so I can insert this into the manuscript.

Skills & Expertise Required

R Statistics