I tried this as well:
import urllib.request
from fastai.vision import *
defaults.device = torch.device('cpu')
learner = load_learner('.', "export.pkl")
It still gave me the same error in Voila.
Here’s the requirements.txt file if it helps:
appnope==0.1.0
argon2-cffi @ file:///Users/runner/miniforge3/conda-bld/argon2-cffi_1596629848887/work
async-generator==1.10
attrs==19.3.0
backcall @ file:///home/conda/feedstock_root/build_artifacts/backcall_1592338393461/work
backports.functools-lru-cache==1.6.1
beautifulsoup4 @ file:///Users/runner/miniforge3/conda-bld/beautifulsoup4_1589760921411/work
bleach @ file:///home/conda/feedstock_root/build_artifacts/bleach_1588608214987/work
blis==0.4.1
Bottleneck==1.3.2
brotlipy==0.7.0
catalogue==1.0.0
certifi==2020.6.20
cffi @ file:///Users/runner/miniforge3/conda-bld/cffi_1595805544857/work
chardet==3.0.4
cryptography @ file:///Users/runner/miniforge3/conda-bld/cryptography_1595348799213/work
cycler==0.10.0
cymem @ file:///Users/runner/miniforge3/conda-bld/cymem_1591801134721/work
decorator==4.4.2
defusedxml==0.6.0
entrypoints==0.3
fastai==1.0.61
fastprogress @ file:///home/jhoward/anaconda3/conda-bld/fastprogress_1597084392729/work
idna @ file:///home/conda/feedstock_root/build_artifacts/idna_1593328102638/work
importlib-metadata @ file:///Users/runner/miniforge3/conda-bld/importlib-metadata_1593211384223/work
ipykernel @ file:///Users/runner/miniforge3/conda-bld/ipykernel_1595446887249/work/dist/ipykernel-5.3.4-py3-none-any.whl
ipython @ file:///Users/runner/miniforge3/conda-bld/ipython_1596256315167/work
ipython-genutils==0.2.0
ipywidgets==7.5.1
jedi @ file:///Users/runner/miniforge3/conda-bld/jedi_1595018286626/work
Jinja2==2.11.2
jsonschema==3.2.0
jupyter-client @ file:///home/conda/feedstock_root/build_artifacts/jupyter_client_1594732094290/work
jupyter-console==6.1.0
jupyter-core==4.6.3
jupyter-server==0.1.1
jupyterlab-pygments==0.1.1
kiwisolver==1.2.0
MarkupSafe==1.1.1
matplotlib @ file:///Users/runner/miniforge3/conda-bld/matplotlib-base_1595353072824/work
mistune==0.8.4
murmurhash==1.0.0
nbconvert==5.6.1
nbformat @ file:///home/conda/feedstock_root/build_artifacts/nbformat_1594060262917/work
notebook @ file:///Users/runner/miniforge3/conda-bld/notebook_1596502482596/work
numexpr==2.7.1
numpy @ file:///Users/runner/miniforge3/conda-bld/numpy_1595522909688/work
olefile==0.46
packaging @ file:///home/conda/feedstock_root/build_artifacts/packaging_1589925210001/work
pandas @ file:///Users/runner/miniforge3/conda-bld/pandas_1595958476229/work
pandocfilters==1.4.2
parso @ file:///home/conda/feedstock_root/build_artifacts/parso_1595548966091/work
pexpect==4.8.0
pickleshare==0.7.5
Pillow @ file:///Users/runner/miniforge3/conda-bld/pillow_1594212133169/work
plac==0.9.6
preshed @ file:///Users/runner/miniforge3/conda-bld/preshed_1591802150273/work
prometheus-client @ file:///home/conda/feedstock_root/build_artifacts/prometheus_client_1590412252446/work
prompt-toolkit @ file:///home/conda/feedstock_root/build_artifacts/prompt-toolkit_1597061474901/work
ptyprocess==0.6.0
pycparser @ file:///home/conda/feedstock_root/build_artifacts/pycparser_1593275161868/work
Pygments==2.6.1
pyOpenSSL==19.1.0
pyparsing==2.4.7
PyQt5==5.12.3
PyQt5-sip==4.19.18
PyQtChart==5.12
PyQtWebEngine==5.12.1
pyrsistent==0.16.0
PySocks==1.7.1
python-dateutil==2.8.1
pytz==2020.1
PyYAML==5.3.1
pyzmq==19.0.2
qtconsole @ file:///home/conda/feedstock_root/build_artifacts/qtconsole_1592845750760/work
QtPy==1.9.0
requests @ file:///home/conda/feedstock_root/build_artifacts/requests_1592425495151/work
scipy @ file:///Users/runner/miniforge3/conda-bld/scipy_1595583590545/work
Send2Trash==1.5.0
six @ file:///home/conda/feedstock_root/build_artifacts/six_1590081179328/work
soupsieve @ file:///Users/runner/miniforge3/conda-bld/soupsieve_1589778513658/work
spacy @ file:///Users/runner/miniforge3/conda-bld/spacy_1594659165489/work
srsly @ file:///Users/runner/miniforge3/conda-bld/srsly_1589222440335/work
terminado==0.8.3
testpath==0.4.4
thinc @ file:///Users/runner/miniforge3/conda-bld/thinc_1590400417741/work
torch==1.4.0
torchvision==0.5.0
tornado==6.0.4
tqdm @ file:///home/conda/feedstock_root/build_artifacts/tqdm_1596476591553/work
traitlets==4.3.3
urllib3 @ file:///home/conda/feedstock_root/build_artifacts/urllib3_1595434816409/work
voila==0.1.21
wasabi @ file:///home/conda/feedstock_root/build_artifacts/wasabi_1594929739383/work
wcwidth @ file:///home/conda/feedstock_root/build_artifacts/wcwidth_1595859607677/work
webencodings==0.5.1
widgetsnbextension @ file:///Users/runner/miniforge3/conda-bld/widgetsnbextension_1594164361045/work
zipp==3.1.0