Install missing and downgrade certain python packages

[basujindal]

• Running the following command python scripts/txt2img.py --prompt "a photograph of an astronaut riding a horse" --plms gives the following error on Ubuntu 20.04:

  File "scripts/txt2img.py", line 11, in <module>
    from pytorch_lightning import seed_everything
  File "/home/thunder/anaconda3/envs/ldm/lib/python3.8/site-packages/pytorch_lightning/__init__.py", line 20, in <module>
    from pytorch_lightning import metrics  # noqa: E402
  File "/home/thunder/anaconda3/envs/ldm/lib/python3.8/site-packages/pytorch_lightning/metrics/__init__.py", line 15, in <module>
    from pytorch_lightning.metrics.classification import (  # noqa: F401
  File "/home/thunder/anaconda3/envs/ldm/lib/python3.8/site-packages/pytorch_lightning/metrics/classification/__init__.py", line 14, in <module>
    from pytorch_lightning.metrics.classification.accuracy import Accuracy  # noqa: F401
  File "/home/thunder/anaconda3/envs/ldm/lib/python3.8/site-packages/pytorch_lightning/metrics/classification/accuracy.py", line 18, in <module>
    from pytorch_lightning.metrics.utils import deprecated_metrics, void
  File "/home/thunder/anaconda3/envs/ldm/lib/python3.8/site-packages/pytorch_lightning/metrics/utils.py", line 22, in <module>
    from torchmetrics.utilities.data import get_num_classes as _get_num_classes
ImportError: cannot import name 'get_num_classes' from 'torchmetrics.utilities.data' (/home/thunder/anaconda3/envs/ldm/lib/python3.8/site-packages/torchmetrics/utilities/data.py)

I could solve it by downgrading torchmetrics to version 0.6.0 by running pip install torchmetrics==0.6.0

• Running the command again I got the error,

Loading model from models/ldm/stable-diffusion-v1/model.ckpt
Global Step: 440000
LatentDiffusion: Running in eps-prediction mode
DiffusionWrapper has 859.52 M params.
making attention of type 'vanilla' with 512 in_channels
Working with z of shape (1, 4, 32, 32) = 4096 dimensions.
making attention of type 'vanilla' with 512 in_channels
Traceback (most recent call last):
  File "scripts/txt2img.py", line 279, in <module>
    main()
  File "scripts/txt2img.py", line 188, in main
    model = load_model_from_config(config, f"{opt.ckpt}")
  File "scripts/txt2img.py", line 31, in load_model_from_config
    model = instantiate_from_config(config.model)
  File "/home/thunder/stable-diffusion/ldm/util.py", line 85, in instantiate_from_config
    return get_obj_from_str(config["target"])(**config.get("params", dict()))
  File "/home/thunder/stable-diffusion/ldm/models/diffusion/ddpm.py", line 461, in __init__
    self.instantiate_cond_stage(cond_stage_config)
  File "/home/thunder/stable-diffusion/ldm/models/diffusion/ddpm.py", line 519, in instantiate_cond_stage
    model = instantiate_from_config(config)
  File "/home/thunder/stable-diffusion/ldm/util.py", line 85, in instantiate_from_config
    return get_obj_from_str(config["target"])(**config.get("params", dict()))
  File "/home/thunder/stable-diffusion/ldm/util.py", line 93, in get_obj_from_str
    return getattr(importlib.import_module(module, package=None), cls)
  File "/home/thunder/anaconda3/envs/ldm/lib/python3.8/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 783, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/thunder/stable-diffusion/ldm/modules/encoders/modules.py", line 7, in <module>
    import kornia
ModuleNotFoundError: No module named 'kornia'

This can be solved by simply installing kornia pip install kornia

[Slacksarenice]

If I'm not mistaken I'm pretty sure upgrading pytorch to the latest version will also resolve this issue.