users/andreasvollrath/radar:slope_correction_lib.js Line 149: proj is not defined

[ChloeDupuis]

Hi

I am trying to use the slope_correction function in GEE but I get this error "users/andreasvollrath/radar:slope_correction_lib.js Line 149: proj is not defined" and do not understand where the problem comes from. I used the following code a few months ago and it worked well so maybe something has changed. Could you please help me ?

"
var batch = require('users/fitoprincipe/geetools:batch') ;
var projet = "CD_Projet";

// Define Area of Interest and CRS
//-----------------------------------
var aoi = ee.FeatureCollection("users/AOI");

var CRS_epsg = 'EPSG:32633';

// Define a start and end date for the analysis
//-----------------------------------------------
var start_monitoring = ee.Date('2021-04-20');
var end_monitoring = ee.Date('2021-07-01');

// Get a collection of Sentinel-1 images in the area of interest and apply filters
//--------------------------------------------------------------------------------------
var s1_collection = ee.ImageCollection('COPERNICUS/S1_GRD')
.filter(ee.Filter.eq('instrumentMode', 'IW'))
.filter(ee.Filter.eq('orbitProperties_pass', 'ASCENDING'))
.filterDate(ee.Date(start_monitoring), ee.Date(end_monitoring))
.filterBounds(aoi)
.map(maskBorder);

// Print the image collection to the console
print('___');
print('Entire collection of Sentinel-1 images: ', s1_collection);

// Mask edges of scenes using angle
//------------------------------------

function maskBorder(image) {
var totalSlices = ee.Number(image.get('totalSlices'))
var sliceNumber = ee.Number(image.get('sliceNumber'))
var middleSlice = ee.Image(sliceNumber.gt(1).and(sliceNumber.lt(totalSlices)))
var mask = image.select(['VV', 'VH']).mask().reduce(ee.Reducer.min()).floor()
var pixelsToMask = mask.not()
.fastDistanceTransform(128, 'pixels').sqrt()
var metersToMask = pixelsToMask
.multiply(ee.Image.pixelArea().sqrt())
.rename('metersToMask')
var notBorder = metersToMask.gte(500).and(pixelsToMask.gt(2))
var angle = image.select('angle')
return image
.updateMask(
angle.gt(31).and(angle.lt(45))
.and(middleSlice.or(notBorder))
)
}

// Radiometric slope correction (Vollrath et al., 2020)
//-----------------------------------------------------------
var slope_lib = require('users/andreasvollrath/radar:slope_correction_lib.js');

// apply loaded lib function on collection (and get back corrected collection with volume model)
var volume = slope_lib.slope_correction(
s1_collection,
// those are optional and need to be given as a dict
{'model': 'surface',
'elevation': ee.Image('USGS/SRTMGL1_003'),
'buffer': 100 // buffer in meter
}
);

// Export to drive
//-----------------

  batch.Download.ImageCollection.toDrive(
  volume,
  projet,
  {region: aoi,
  scale: 10,
  maxPixels: 10e10,
  crs: CRS_epsg})