AttributeError: module 'torch' has no attribute 'complex'

[yosun]

(HRN) yc@razer3080ti:~/testing3dai/HRN/HRN$ pip install torch-complex
Keyring is skipped due to an exception: 'keyring.backends'
Requirement already satisfied: torch-complex in /home/yc/anaconda3/lib/python3.7/site-packages (0.4.3)
Requirement already satisfied: numpy in /home/yc/anaconda3/lib/python3.7/site-packages (from torch-complex) (1.18.1)
(HRN) yc@razer3080ti:~/testing3dai/HRN/HRN$ CUDA_VISIBLE_DEVICES=0 python demo.py --input_type single_view --input_root ./assets/examples/single_view_image --output_root ./assets/examples/single_view_image_results
Traceback (most recent call last):
  File "demo.py", line 2, in <module>
    from models.hrn import Reconstructor
  File "/home/yc/testing3dai/HRN/HRN/models/__init__.py", line 22, in <module>
    from models.base_model import BaseModel
  File "/home/yc/testing3dai/HRN/HRN/models/base_model.py", line 6, in <module>
    from . import networks
  File "/home/yc/testing3dai/HRN/HRN/models/networks.py", line 16, in <module>
    from kornia.geometry import warp_affine
  File "/home/yc/anaconda3/lib/python3.7/site-packages/kornia/__init__.py", line 3, in <module>
    from . import filters
  File "/home/yc/anaconda3/lib/python3.7/site-packages/kornia/filters/__init__.py", line 3, in <module>
    from .bilateral import BilateralBlur, JointBilateralBlur, bilateral_blur, joint_bilateral_blur
  File "/home/yc/anaconda3/lib/python3.7/site-packages/kornia/filters/bilateral.py", line 3, in <module>
    from kornia.core import Module, Tensor, pad
  File "/home/yc/anaconda3/lib/python3.7/site-packages/kornia/core/__init__.py", line 1, in <module>
    from ._backend import (
  File "/home/yc/anaconda3/lib/python3.7/site-packages/kornia/core/_backend.py", line 24, in <module>
    complex = torch.complex
AttributeError: module 'torch' has no attribute 'complex'

[Dutra-Apex]

What torch version are you using?