error GUI Javascript: "Partition: Layer error: Image.select: Pattern 'cosVZA' did not match any bands"

Hi, 

very nice and neat toolbox. However, it does not work for me when trying to process LAI from Sentinel-2 SR collections. Using the GUI in Google Earth Engine Code Editor it throws the error that the band cosVZA does not exist and I do not know how to resolve that issue in the source code. 

I would highly appreciate your help with that error. 

Many Thanks
J