'Column' object has no 'mask' on transforming coordinates

I can’t figure out why this code

from astropy.coordinates import EarthLocation
from astropy.time import Time
from astropy import units as u
from astropy.coordinates import SkyCoord, AltAz, ICRS
from astropy.table import Table

t0=Time('2019-06-9 1:00:00')
local= EarthLocation(lat='45d31m59.85s', lon='9d13m33.03s', height=144*u.m)
alt='66.2d'
azimuth='91.3d'
coord_aa=(SkyCoord(azimuth, alt, frame=AltAz(location=local,obstime=t0)))
coord_aa.transform_to('icrs')

is giving me this: AttributeError: 'Column' object has no attribute 'mask'

[ghost]

@pllim Solved it! It was just a download-related problem, thank you.

[ghost]

@pllim ok I removed the __pycache__ before. Now that I did

rm -r .astropy/cache

I downloaded again the 3.2M file (but with a moderate wifi connection, I’m not home rn), but still error occur! This time is a different one:

Traceback (most recent call last):
  File "/Users/nigresson/Documents/Test.py", line 12, in <module>
    coord_aa.transform_to('icrs')
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/astropy/coordinates/sky_coordinate.py", line 443, in transform_to
    new_coord = trans(self.frame, generic_frame)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/astropy/coordinates/transformations.py", line 1377, in __call__
    curr_coord = t(curr_coord, curr_toframe)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/astropy/coordinates/transformations.py", line 980, in __call__
    return supcall(fromcoord, toframe)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/astropy/coordinates/builtin_frames/cirs_observed_transforms.py", line 91, in altaz_to_cirs
    xp, yp = get_polar_motion(altaz_coo.obstime)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/astropy/coordinates/builtin_frames/utils.py", line 41, in get_polar_motion
    xp, yp, status = iers.IERS_Auto.open().pm_xy(time, return_status=True)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/astropy/utils/iers/iers.py", line 660, in open
    cls.iers_table = cls.read(file=filename)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/astropy/utils/iers/iers.py", line 507, in read
    table = cls._combine_a_b_columns(iers_a)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/astropy/utils/iers/iers.py", line 470, in _combine_a_b_columns
    table.meta['predictive_index'] = np.min(np.flatnonzero(is_predictive))
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/numpy/core/fromnumeric.py", line 2618, in amin
    initial=initial)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/numpy/core/fromnumeric.py", line 86, in _wrapreduction
    return ufunc.reduce(obj, axis, dtype, out, **passkwargs)
ValueError: zero-size array to reduction operation minimum which has no identity

I’m start thinking of a bad downloading of the file (?). I’ll try later tonight with ethernet cable at home