matplotlib error when starting webui

[Ineman]

I am using amazon sagemaker studio lab. I completely reset all environments today and reinstalled env, webui from the beginning. Then this error happen.
I reset environment and reinstalled webui several times but it doens not work. '%matplotlib inline' and 'import matplotlib' doen not work either. I updated conda too. (conda update --all, conda update -n base conda)
But if i run webui by jupyter termina, itt works. Not running only jupyter notebooks cells.
I need help.

/home/studio-lab-user/sagemaker-studiolab-notebooks/stable-diffusion-webui



################################################################

Install script for stable-diffusion + Web UI

Tested on Debian 11 (Bullseye), Fedora 34+ and openSUSE Leap 15.4 or newer.

################################################################



################################################################

Running on studio-lab-user user

################################################################



################################################################

Repo already cloned, using it as install directory

################################################################



################################################################

Create and activate python venv

################################################################



################################################################

Launching [launch.py](http://launch.py/)...

################################################################

Python 3.10.12 | packaged by conda-forge | (main, Jun 23 2023, 22:40:32) [GCC 12.3.0]

Version: v1.9.3

Commit hash: 1c0a0c4c26f78c32095ebc7f8af82f5c04fca8c0

Launching Web UI with arguments: --skip-torch-cuda-test --disable-console-progressbars --xformers --theme dark --enable-insecure-extension-access --no-half-vae

Traceback (most recent call last):

  File "/home/studio-lab-user/sagemaker-studiolab-notebooks/stable-diffusion-webui/[launch.py](http://launch.py/)", line 48, in <module>

    main()

  File "/home/studio-lab-user/sagemaker-studiolab-notebooks/stable-diffusion-webui/[launch.py](http://launch.py/)", line 44, in main

    start()

  File "/home/studio-lab-user/sagemaker-studiolab-notebooks/stable-diffusion-webui/modules/[launch_utils.py](http://launch_utils.py/)", line 465, in start

    import webui

  File "/home/studio-lab-user/sagemaker-studiolab-notebooks/stable-diffusion-webui/[webui.py](http://webui.py/)", line 13, in <module>

    initialize.imports()

  File "/home/studio-lab-user/sagemaker-studiolab-notebooks/stable-diffusion-webui/modules/[initialize.py](http://initialize.py/)", line 17, in imports

    import pytorch_lightning  # noqa: F401

  File "/home/studio-lab-user/sagemaker-studiolab-notebooks/stable-diffusion-webui/venv/lib/python3.10/site-packages/pytorch_lightning/__init__.py", line 35, in <module>

    from pytorch_lightning.callbacks import Callback  # noqa: E402

  File "/home/studio-lab-user/sagemaker-studiolab-notebooks/stable-diffusion-webui/venv/lib/python3.10/site-packages/pytorch_lightning/callbacks/__init__.py", line 14, in <module>

    from pytorch_lightning.callbacks.batch_size_finder import BatchSizeFinder

  File "/home/studio-lab-user/sagemaker-studiolab-notebooks/stable-diffusion-webui/venv/lib/python3.10/site-packages/pytorch_lightning/callbacks/[batch_size_finder.py](http://batch_size_finder.py/)", line 24, in <module>

    from pytorch_lightning.callbacks.callback import Callback

  File "/home/studio-lab-user/sagemaker-studiolab-notebooks/stable-diffusion-webui/venv/lib/python3.10/site-packages/pytorch_lightning/callbacks/[callback.py](http://callback.py/)", line 25, in <module>

    from pytorch_lightning.utilities.types import STEP_OUTPUT

  File "/home/studio-lab-user/sagemaker-studiolab-notebooks/stable-diffusion-webui/venv/lib/python3.10/site-packages/pytorch_lightning/utilities/[types.py](http://types.py/)", line 27, in <module>

    from torchmetrics import Metric

  File "/home/studio-lab-user/sagemaker-studiolab-notebooks/stable-diffusion-webui/venv/lib/python3.10/site-packages/torchmetrics/__init__.py", line 26, in <module>

    from torchmetrics import functional  # noqa: E402

  File "/home/studio-lab-user/sagemaker-studiolab-notebooks/stable-diffusion-webui/venv/lib/python3.10/site-packages/torchmetrics/functional/__init__.py", line 14, in <module>

    from [torchmetrics.functional.audio](http://torchmetrics.functional.audio/)._deprecated import _permutation_invariant_training as permutation_invariant_training

  File "/home/studio-lab-user/sagemaker-studiolab-notebooks/stable-diffusion-webui/venv/lib/python3.10/site-packages/torchmetrics/functional/audio/__init__.py", line 14, in <module>

    from [torchmetrics.functional.audio](http://torchmetrics.functional.audio/).pit import permutation_invariant_training, pit_permutate

  File "/home/studio-lab-user/sagemaker-studiolab-notebooks/stable-diffusion-webui/venv/lib/python3.10/site-packages/torchmetrics/functional/audio/[pit.py](http://pit.py/)", line 22, in <module>

    from torchmetrics.utilities import rank_zero_warn

  File "/home/studio-lab-user/sagemaker-studiolab-notebooks/stable-diffusion-webui/venv/lib/python3.10/site-packages/torchmetrics/utilities/__init__.py", line 14, in <module>

    from torchmetrics.utilities.checks import check_forward_full_state_property

  File "/home/studio-lab-user/sagemaker-studiolab-notebooks/stable-diffusion-webui/venv/lib/python3.10/site-packages/torchmetrics/utilities/[checks.py](http://checks.py/)", line 25, in <module>

    from torchmetrics.metric import Metric

  File "/home/studio-lab-user/sagemaker-studiolab-notebooks/stable-diffusion-webui/venv/lib/python3.10/site-packages/torchmetrics/[metric.py](http://metric.py/)", line 42, in <module>

    from torchmetrics.utilities.plot import _AX_TYPE, _PLOT_OUT_TYPE, plot_single_or_multi_val

  File "/home/studio-lab-user/sagemaker-studiolab-notebooks/stable-diffusion-webui/venv/lib/python3.10/site-packages/torchmetrics/utilities/[plot.py](http://plot.py/)", line 25, in <module>

    import matplotlib

  File "/home/studio-lab-user/sagemaker-studiolab-notebooks/stable-diffusion-webui/venv/lib/python3.10/site-packages/matplotlib/__init__.py", line 1270, in <module>

    rcParams['backend'] = os.environ.get('MPLBACKEND')

  File "/home/studio-lab-user/sagemaker-studiolab-notebooks/stable-diffusion-webui/venv/lib/python3.10/site-packages/matplotlib/__init__.py", line 738, in __setitem__

    raise ValueError(f"Key {key}: {ve}") from None

ValueError: Key backend: 'module://matplotlib_inline.backend_inline' is not a valid value for backend; supported values are ['gtk3agg', 'gtk3cairo', 'gtk4agg', 'gtk4cairo', 'macosx', 'nbagg', 'notebook', 'qtagg', 'qtcairo', 'qt5agg', 'qt5cairo', 'tkagg', 'tkcairo', 'webagg', 'wx', 'wxagg', 'wxcairo', 'agg', 'cairo', 'pdf', 'pgf', 'ps', 'svg', 'template']

[w-e-w]

note I'm not very familiar with the intricacies of matplotlib, take what I said with a grain of salt

when running in terminal is works because the matplotlib uses the default backend render grahps
but I think jupyter notebooks uses a diffrent matplotlib backend to support inline graphs in notebooks
and in you enviremet it's not dose not have https://pypi.org/project/matplotlib-inline

I would either try disabling the inline backend by setting MPLBACKEND to a support backend
and set it to one of the ones listed in

ValueError: Key backend: 'module://matplotlib_inline.backend_inline' is not a valid value for backend; supported values are ['gtk3agg', 'gtk3cairo', 'gtk4agg', 'gtk4cairo', 'macosx', 'nbagg', 'notebook', 'qtagg', 'qtcairo', 'qt5agg', 'qt5cairo', 'tkagg', 'tkcairo', 'webagg', 'wx', 'wxagg', 'wxcairo', 'agg', 'cairo', 'pdf', 'pgf', 'ps', 'svg', 'template']

like I said above I'm not familiar with matplotlib backends, so I don't what is the default and whitch is suitable

or you could try installing https://pypi.org/project/matplotlib-inline