HANDY not running

[mdredyanahmed]

I tried to run HANDY via command line and followed installation suggestions but I am having following error:
Last login: Sat Jun 22 22:20:16 on ttys009
(base) mdredyanahmed@Redyans-MacBook-Pro ~ % HANDY

EnvironmentNameNotFound: Could not find conda environment: HANDY-env
You can list all discoverable environments with conda info --envs.

Calling python "/Users/mdredyanahmed/HANDY/normingApp.py"
Set basicGrid grid
Traceback (most recent call last):
File "/Users/mdredyanahmed/HANDY/normingApp.py", line 1428, in
main()
File "/Users/mdredyanahmed/HANDY/normingApp.py", line 1421, in main
app=NormSpectra()
File "/Users/mdredyanahmed/HANDY/normingApp.py", line 46, in init
self.createMainWindow()
File "/Users/mdredyanahmed/HANDY/normingApp.py", line 52, in createMainWindow
self.createMenu()
File "/Users/mdredyanahmed/HANDY/normingApp.py", line 98, in createMenu
self.onChooseGrid() # load default grid
File "/Users/mdredyanahmed/HANDY/normingApp.py", line 132, in onChooseGrid
self.appLogic.specSynthesizer.setGrid(
File "/Users/mdredyanahmed/HANDY/specInterface.py", line 75, in setGrid
self.grid = gridInterface.GridSynthesizer(
File "/Users/mdredyanahmed/HANDY/gridInterface.py", line 47, in init
self.wave = self.loadRefWave()
File "/Users/mdredyanahmed/HANDY/gridInterface.py", line 65, in loadRefWave
df = pd.read_csv(self.wavelengthFileName,
File "/Users/mdredyanahmed/mambaforge/lib/python3.10/site-packages/pandas/io/parsers/readers.py", line 912, in read_csv
return _read(filepath_or_buffer, kwds)
File "/Users/mdredyanahmed/mambaforge/lib/python3.10/site-packages/pandas/io/parsers/readers.py", line 577, in _read
parser = TextFileReader(filepath_or_buffer, **kwds)
File "/Users/mdredyanahmed/mambaforge/lib/python3.10/site-packages/pandas/io/parsers/readers.py", line 1407, in init
self._engine = self._make_engine(f, self.engine)
File "/Users/mdredyanahmed/mambaforge/lib/python3.10/site-packages/pandas/io/parsers/readers.py", line 1661, in _make_engine
self.handles = get_handle(
File "/Users/mdredyanahmed/mambaforge/lib/python3.10/site-packages/pandas/io/common.py", line 859, in get_handle
handle = open(
FileNotFoundError: [Errno 2] No such file or directory: '/Users/mdredyanahmed/HANDY/bigGrid/refWave.dat'

I don't know why this bigGrid doesn't have refwave. I downloaded the bigGrid from the link. Here is the snippet of ls of biggrid:
m0.10t20000g350v15.0_3500_7000.norm m1.00t20000g225v15.0_3500_7000.norm
m0.10t20000g375v0.0_3500_7000.norm m1.00t20000g250v0.0_3500_7000.norm