Obtaining land surface temperature in Google Earth Engine using GEET and TOA error is showing

I am very new to using GEE and only using for one unit I’m currently doing (only using for two months and I have no coding experience). I am trying to calculate the land surface temperature estimate and I found a code from E. Lacerda but the only thing is that I get an error saying
"band_to_toa.expression is not a function
in toa_radiance(), line 938
…"
I’ve spent past few hours trying to get my way around this by googling but nothing was useful for me. I’m really not sure what to do at this point and really trying to get this done asap for due dates.

Here’s the link to my script
https://code.earthengine.google.com/14a01e61105994465263d252f0c501a1

var raw = ee.ImageCollection("LANDSAT/LC08/C01/T1_TOA") 
  .filterDate ('2016-01-01', '2016-12-31');

var surf_temp = function(image) {
  var geet = require('users/elacerda/geet:geet');
  var new_toa_radiance = geet.toa_radiance(raw, 11);
  var brightness = geet.brightness_temp_l8c(new_toa_radiance, true);
  var ndvi = geet.ndvi_l8(brightness);
  var veg = geet.prop_veg(ndvi);
  var lse = geet.surface_emissivity(veg);
  var surface = geet.surface_temperature_oli(lse);
  var lst = surface.select('LST');
  var img = lst
  return img;

};
Map.addLayer(raw.map(surf_temp));