nans taking over the output of get_aacgm_coord_arr about aacgmv2 HOT 8 CLOSED

>>> import aacgmv2 as aacgm
>>> lat = [25.69817439, 17.14050096]
>>> lon = [19.184186, -4.46442997]
>>> alt = [465.28404149, 466.79848959]
>>> method = 'ALLOWTRACE|GEOCENTRIC'
>>> print(aacgm.get_aacgm_coord_arr(lat[0], lon[0], alt[0], dt.datetime(2014,12,7,16,17), method=method))
(array([21.16991252]), array([91.79687939]), array([17.81387255]))
>>> print(aacgm.get_aacgm_coord_arr(lat[1], lon[1], alt[1], dt.datetime(2014,12,7,16,17), method=method))
(array([nan]), array([nan]), array([nan]))
>>> print(aacgm.get_aacgm_coord_arr(lat, lon, alt, dt.datetime(2014,12,7,16,17), method=method))
(array([21.16991252,         nan]), array([91.79687939,         nan]), array([17.81387255,         nan]))

import aacgmv2
import datetime as dt

lat = [25.69817439, 17.14050096]
lon = [19.184186, -4.46442997]
alt = [465.28404149, 466.79848959]
method = 'geocentric|allowtrace'

print(aacgmv2.get_aacgm_coord_arr(lat[0], lon[0], alt[0], dt.datetime(2014,12,7,16,17), method=method))
for a single location, consider using convert_latlon or get_aacgm_coord
(array([21.16991252]), array([91.79687939]), array([17.81387255]))

print(aacgmv2.get_aacgm_coord_arr(lat[1], lon[1], alt[1], dt.datetime(2014,12,7,16,17), method=method))
for a single location, consider using convert_latlon or get_aacgm_coord
unable to perform vector conversion at 2014-12-07 16:17:00 using method 20: <class 'RuntimeError'>
(array([nan]), array([nan]), array([nan]))

print(aacgmv2.get_aacgm_coord_arr(lat, lon, alt, dt.datetime(2014,12,7,16,17), method=method))
unable to perform vector conversion at 2014-12-07 16:17:00 using method 20: <class 'RuntimeError'>
(array([nan, nan]), array([nan, nan]), array([nan, nan]))