「Stable Diffusion WebUI Forge」 can no longer be started after updating

Nobody has claimed this yet.

Yesterday, as a result of updating 「StabilityMatrix」 and 「Stable Diffusion WebUI Forge」, they failed to start.
I tried various methods but nothing worked until I posted this.
I don't know if the update is directly related.
The text displayed on the console at startup is as follows.

```python
Python 3.10.11 (tags/v3.10.11:7d4cc5a, Apr 5 2023, 00:38:17) [MSC v.1929 64 bit (AMD64)]
Version: f1.0.2v1.10.1-previous-47-gf052fabd
Commit hash: f052fabd4ddc9bebe73ed8fa24cccb1dc9b400ad
Installing requirements
*** Error running install.py for extension H:\Matrix\Packages\Stable Diffusion WebUI Forge\extensions\sd-webui-deforum.
*** Command: "H:\Matrix\Packages\Stable Diffusion WebUI Forge\venv\Scripts\python.exe" "H:\Matrix\Packages\Stable Diffusion WebUI Forge\extensions\sd-webui-deforum\install.py"
*** Error code: 1
*** stdout: Traceback (most recent call last):
*** File "H:\Matrix\Packages\Stable Diffusion WebUI Forge\extensions\sd-webui-deforum\install.py", line 22, in
*** with open(req_file) as file:
*** FileNotFoundError: [Errno 2] No such file or directory: 'H:\\Matrix\\Packages\\Stable Diffusion WebUI Forge\\extensions\\sd-webui-deforum\\requirements.txt'
Installing diffusers==0.25.0
Total VRAM 12288 MB, total RAM 16125 MB
Set vram state to: NORMAL_VRAM
Device: cuda:0 NVIDIA GeForce RTX 3060 : native
Hint: your device supports --pin-shared-memory for potential speed improvements.
Hint: your device supports --cuda-malloc for potential speed improvements.
Hint: your device supports --cuda-stream for potential speed improvements.
VAE dtype: torch.bfloat16
*** Error running install.py for extension H:\Matrix\Packages\Stable Diffusion WebUI Forge\extensions-builtin\forge_legacy_preprocessors.
*** Command: "H:\Matrix\Packages\Stable Diffusion WebUI Forge\venv\Scripts\python.exe" "H:\Matrix\Packages\Stable Diffusion WebUI Forge\extensions-builtin\forge_legacy_preprocessors\install.py"
*** Error code: 1
*** stdout: H:\Matrix\Packages\Stable Diffusion WebUI Forge\extensions-builtin\forge_legacy_preprocessors\install.py:2: DeprecationWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html
*** import pkg_resources
*** Traceback (most recent call last):
*** File "H:\Matrix\Packages\Stable Diffusion WebUI Forge\extensions-builtin\forge_legacy_preprocessors\install.py", line 134, in
*** install_requirements(main_req_file)
*** File "H:\Matrix\Packages\Stable Diffusion WebUI Forge\extensions-builtin\forge_legacy_preprocessors\install.py", line 32, in install_requirements
*** with open(req_file) as file:
*** FileNotFoundError: [Errno 2] No such file or directory: 'H:\\Matrix\\Packages\\Stable Diffusion WebUI Forge\\extensions-builtin\\forge_legacy_preprocessors\\requirements.txt'
*** Error running install.py for extension H:\Matrix\Packages\Stable Diffusion WebUI Forge\extensions-builtin\sd_forge_controlnet.
*** Command: "H:\Matrix\Packages\Stable Diffusion WebUI Forge\venv\Scripts\python.exe" "H:\Matrix\Packages\Stable Diffusion WebUI Forge\extensions-builtin\sd_forge_controlnet\install.py"
*** Error code: 1
*** stdout: H:\Matrix\Packages\Stable Diffusion WebUI Forge\extensions-builtin\sd_forge_controlnet\install.py:2: DeprecationWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html
*** import pkg_resources
*** Traceback (most recent call last):
*** File "H:\Matrix\Packages\Stable Diffusion WebUI Forge\extensions-builtin\sd_forge_controlnet\install.py", line 66, in
*** install_requirements(main_req_file)
*** File "H:\Matrix\Packages\Stable Diffusion WebUI Forge\extensions-builtin\sd_forge_controlnet\install.py", line 32, in install_requirements
*** with open(req_file) as file:
*** FileNotFoundError: [Errno 2] No such file or directory: 'H:\\Matrix\\Packages\\Stable Diffusion WebUI Forge\\extensions-builtin\\sd_forge_controlnet\\requirements.txt'
Launching Web UI with arguments: --gradio-allowed-path 'H:\Matrix\Images'
Total VRAM 12288 MB, total RAM 16125 MB
Set vram state to: NORMAL_VRAM
Device: cuda:0 NVIDIA GeForce RTX 3060 : native
Hint: your device supports --pin-shared-memory for potential speed improvements.
Hint: your device supports --cuda-malloc for potential speed improvements.
Hint: your device supports --cuda-stream for potential speed improvements.
VAE dtype: torch.bfloat16
CUDA Stream Activated: False
Using pytorch cross attention
Traceback (most recent call last):
File "H:\Matrix\Packages\Stable Diffusion WebUI Forge\launch.py", line 51, in
main()
File "H:\Matrix\Packages\Stable Diffusion WebUI Forge\launch.py", line 47, in main
start()
File "H:\Matrix\Packages\Stable Diffusion WebUI Forge\modules\launch_utils.py", line 541, in start
import webui
File "H:\Matrix\Packages\Stable Diffusion WebUI Forge\webui.py", line 21, in
initialize.imports()
File "H:\Matrix\Packages\Stable Diffusion WebUI Forge\modules\initialize.py", line 53, in imports
from modules import processing, gradio_extensions, ui # noqa: F401
File "H:\Matrix\Packages\Stable Diffusion WebUI Forge\modules\processing.py", line 18, in
import modules.sd_hijack
File "H:\Matrix\Packages\Stable Diffusion WebUI Forge\modules\sd_hijack.py", line 5, in
from modules import devices, sd_hijack_optimizations, shared, script_callbacks, errors, sd_unet, patches
File "H:\Matrix\Packages\Stable Diffusion WebUI Forge\modules\sd_hijack_optimizations.py", line 13, in
from modules.hypernetworks import hypernetwork
File "H:\Matrix\Packages\Stable Diffusion WebUI Forge\modules\hypernetworks\hypernetwork.py", line 8, in
import modules.textual_inversion.dataset
File "H:\Matrix\Packages\Stable Diffusion WebUI Forge\modules\textual_inversion\dataset.py", line 12, in
from modules import devices, shared, images
File "H:\Matrix\Packages\Stable Diffusion WebUI Forge\modules\images.py", line 22, in
from modules import sd_samplers, shared, script_callbacks, errors
File "H:\Matrix\Packages\Stable Diffusion WebUI Forge\modules\sd_samplers.py", line 5, in
from modules import sd_samplers_kdiffusion, sd_samplers_timesteps, sd_samplers_lcm, shared, sd_samplers_common, sd_schedulers
File "H:\Matrix\Packages\Stable Diffusion WebUI Forge\modules\sd_samplers_kdiffusion.py", line 4, in
from modules import sd_samplers_common, sd_samplers_extra, sd_samplers_cfg_denoiser, sd_schedulers, devices
File "H:\Matrix\Packages\Stable Diffusion WebUI Forge\modules\sd_samplers_common.py", line 6, in
from modules import devices, images, sd_vae_approx, sd_samplers, sd_vae_taesd, shared, sd_models
File "H:\Matrix\Packages\Stable Diffusion WebUI Forge\modules\sd_models.py", line 19, in
from modules_forge import forge_loader
File "H:\Matrix\Packages\Stable Diffusion WebUI Forge\modules_forge\forge_loader.py", line 21, in
from backend.loader import load_huggingface_components
File "H:\Matrix\Packages\Stable Diffusion WebUI Forge\backend\loader.py", line 6, in
from diffusers.loaders.single_file_utils import fetch_diffusers_config
ModuleNotFoundError: No module named 'diffusers.loaders.single_file_utils'
```

Start with the traceback from launch.py through modules/initialize.py and modules_forge/forge_loader.py to inspect the missing diffusers import. Also review the referenced extension install.py files and their missing requirements.txt paths. Done means the WebUI starts without the reported installation and ModuleNotFoundError failures.

Written by the indexing model from the issue text.