Traceback (most recent call last):


 "/opt/certbot/src/certbot/certbot/_internal/renewal.py", line 71, in _reconstitute

renewal_candidate = storage.RenewableCert(full_path, config)


 "/opt/certbot/src/certbot/certbot/_internal/storage.py", line 449, in __init__

raise errors.CertStorageError(
certbot.errors.CertStorageError: renewal config file {} is missing a required file reference

Traceback (most recent call last):


 "main.py", line 182, in <module>

main(args)


 "main.py", line 59, in main

solver.train(loaders)


 "/home/ipsych/ML/Stargan_v2/core/solver.py", line 170, in train

calculate_metrics(nets_ema, args, i+1, mode='latent')


 "/home/ipsych/.conda/envs/Pytorch_1_4_0/lib/python3.7/site-packages/torch/autograd/grad_mode.py", line 49, in decorate_no_grad

return func(*args, **kwargs)


 "/home/ipsych/ML/Stargan_v2/metrics/eval.py", line 61, in calculate_metrics

iter_ref = iter(loader_ref)
UnboundLocalError: local variable 'loader_ref' referenced before assignment
