学习和使用ComfyUI最痛苦是什么？常见故障和解决方法

#Rename this to extra_model_paths.yaml and ComfyUI will load it

#config for a1111 ui
#all you have to do is change the base_path to where yours is installed
a111:
 base_path: C:/dev/sd160/stable-diffusion-webui

 checkpoints: models/Stable-diffusion
 configs: models/Stable-diffusion
 vae: models/VAE
 loras: |
         models/Lora
         models/LyCORIS
 upscale_models: |
                  models/ESRGAN
                  models/RealESRGAN
                  models/SwinIR
 embeddings: embeddings
 hypernetworks: models/hypernetworks
 controlnet: models/ControlNet

#other_ui:
#    base_path: path/to/ui
#    checkpoints: models/checkpoints
#    gligen: models/gligen
#    custom_nodes: path/custom_nodes

Error handling request
Traceback (most recent call last):
  File "C:\DEV\ComfyUI_windows_portable\python_embeded\lib\site-packages\aiohttp\web_protocol.py", line 433, in _handle_request
    resp = await request_handler(request)
  File "C:\DEV\ComfyUI_windows_portable\python_embeded\lib\site-packages\aiohttp\web_app.py", line 504, in _handle
    resp = await handler(request)
  File "C:\DEV\ComfyUI_windows_portable\python_embeded\lib\site-packages\aiohttp\web_middlewares.py", line 117, in impl
    return await handler(request)
  File "C:\DEV\ComfyUI_windows_portable\ComfyUI\server.py", line 46, in cache_control
    response: web.Response = await handler(request)
  File "C:\DEV\ComfyUI_windows_portable\ComfyUI\custom_nodes\ComfyUI-Manager\__init__.py", line 522, in fetch_customnode_mappings
    json_obj = await get_data(uri)
  File "C:\DEV\ComfyUI_windows_portable\ComfyUI\custom_nodes\ComfyUI-Manager\__init__.py", line 367, in get_data
    async with session.get(uri) as resp:
  File "C:\DEV\ComfyUI_windows_portable\python_embeded\lib\site-packages\aiohttp\client.py", line 1141, in __aenter__
    self._resp = await self._coro
  File "C:\DEV\ComfyUI_windows_portable\python_embeded\lib\site-packages\aiohttp\client.py", line 560, in _request
    await resp.start(conn)
  File "C:\DEV\ComfyUI_windows_portable\python_embeded\lib\site-packages\aiohttp\client_reqrep.py", line 899, in start
    message, payload = await protocol.read()  # type: ignore[union-attr]
  File "C:\DEV\ComfyUI_windows_portable\python_embeded\lib\site-packages\aiohttp\streams.py", line 616, in read
    await self._waiter
aiohttp.client_exceptions.ClientOSError: [WinError 121] 信号灯超时时间已到

Traceback (most recent call last):
  File "C:\DEV\ComfyUI_windows_portable\python_embeded\lib\site-packages\aiohttp\web_protocol.py", line 433, in _handle_request
    resp = await request_handler(request)
  File "C:\DEV\ComfyUI_windows_portable\python_embeded\lib\site-packages\aiohttp\web_app.py", line 504, in _handle
    resp = await handler(request)
  File "C:\DEV\ComfyUI_windows_portable\python_embeded\lib\site-packages\aiohttp\web_middlewares.py", line 117, in impl
    return await handler(request)
  File "C:\DEV\ComfyUI_windows_portable\ComfyUI\server.py", line 46, in cache_control
    response: web.Response = await handler(request)
  File "C:\DEV\ComfyUI_windows_portable\ComfyUI\custom_nodes\ComfyUI-Manager\__init__.py", line 582, in fetch_customnode_list
    json_obj = await get_data(uri)
  File "C:\DEV\ComfyUI_windows_portable\ComfyUI\custom_nodes\ComfyUI-Manager\__init__.py", line 367, in get_data
    async with session.get(uri) as resp:
  File "C:\DEV\ComfyUI_windows_portable\python_embeded\lib\site-packages\aiohttp\client.py", line 1141, in __aenter__
    self._resp = await self._coro
  File "C:\DEV\ComfyUI_windows_portable\python_embeded\lib\site-packages\aiohttp\client.py", line 536, in _request
    conn = await self._connector.connect(
  File "C:\DEV\ComfyUI_windows_portable\python_embeded\lib\site-packages\aiohttp\connector.py", line 540, in connect
    proto = await self._create_connection(req, traces, timeout)
  File "C:\DEV\ComfyUI_windows_portable\python_embeded\lib\site-packages\aiohttp\connector.py", line 899, in _create_connection
    _, proto = await self._create_proxy_connection(req, traces, timeout)
  File "C:\DEV\ComfyUI_windows_portable\python_embeded\lib\site-packages\aiohttp\connector.py", line 1328, in _create_proxy_connection
    return await self._start_tls_connection(
  File "C:\DEV\ComfyUI_windows_portable\python_embeded\lib\site-packages\aiohttp\connector.py", line 1111, in _start_tls_connection
    raise client_error(req.connection_key, exc) from exc
aiohttp.client_exceptions.ClientConnectorError: Cannot connect to host raw.githubusercontent.com:443 ssl:default [None]

E:\ComfyUI_windows_portable\ComfyUI>..\python_embeded\python.exe main.py -h
** ComfyUI startup time: 2024-01-06 15:42:26.697935
** Platform: Windows
** Python version: 3.11.6 (tags/v3.11.6:8b6ee5b, Oct  2 2023, 14:57:12) [MSC v.1935 64 bit (AMD64)]
** Python executable: E:\ComfyUI_windows_portable\python_embeded\python.exe
** Log path: E:\ComfyUI_windows_portable\ComfyUI\comfyui.log

Prestartup times for custom nodes:
   0.0 seconds: E:\ComfyUI_windows_portable\ComfyUI\custom_nodes\rgthree-comfy
   0.1 seconds: E:\ComfyUI_windows_portable\ComfyUI\custom_nodes\ComfyUI-Manager

usage: main.py [-h] [--listen [IP]] [--port PORT] [--enable-cors-header [ORIGIN]] [--max-upload-size MAX_UPLOAD_SIZE]
               [--extra-model-paths-config PATH [PATH ...]] [--output-directory OUTPUT_DIRECTORY]
               [--temp-directory TEMP_DIRECTORY] [--input-directory INPUT_DIRECTORY] [--auto-launch]
               [--disable-auto-launch] [--cuda-device DEVICE_ID] [--cuda-malloc | --disable-cuda-malloc]
               [--dont-upcast-attention] [--force-fp32 | --force-fp16]
               [--bf16-unet | --fp16-unet | --fp8_e4m3fn-unet | --fp8_e5m2-unet]
               [--fp16-vae | --fp32-vae | --bf16-vae]
               [--fp8_e4m3fn-text-enc | --fp8_e5m2-text-enc | --fp16-text-enc | --fp32-text-enc]
               [--directml [DIRECTML_DEVICE]] [--disable-ipex-optimize]
               [--preview-method [none,auto,latent2rgb,taesd]]
               [--use-split-cross-attention | --use-quad-cross-attention | --use-pytorch-cross-attention]
               [--disable-xformers] [--gpu-only | --highvram | --normalvram | --lowvram | --novram | --cpu]
               [--disable-smart-memory] [--deterministic] [--dont-print-server] [--quick-test-for-ci]
               [--windows-standalone-build] [--disable-metadata]

options:
  -h, --help            show this help message and exit
  --listen [IP]         Specify the IP address to listen on (default: 127.0.0.1). If --listen is provided without an
                        argument, it defaults to 0.0.0.0. (listens on all)
  --port PORT           Set the listen port.
  --enable-cors-header [ORIGIN]
                        Enable CORS (Cross-Origin Resource Sharing) with optional origin or allow all with default
                        '*'.
  --max-upload-size MAX_UPLOAD_SIZE
                        Set the maximum upload size in MB.
  --extra-model-paths-config PATH [PATH ...]
                        Load one or more extra_model_paths.yaml files.
 --output-directory OUTPUT_DIRECTORY
                        Set the ComfyUI output directory.
  --temp-directory TEMP_DIRECTORY
                        Set the ComfyUI temp directory (default is in the ComfyUI directory).
  --input-directory INPUT_DIRECTORY
                        Set the ComfyUI input directory.
  --auto-launch         Automatically launch ComfyUI in the default browser.
  --disable-auto-launch
                        Disable auto launching the browser.
  --cuda-device DEVICE_ID
                        Set the id of the cuda device this instance will use.
  --cuda-malloc         Enable cudaMallocAsync (enabled by default for torch 2.0 and up).
  --disable-cuda-malloc
                        Disable cudaMallocAsync.
  --dont-upcast-attention
                        Disable upcasting of attention. Can boost speed but increase the chances of black images.
  --force-fp32          Force fp32 (If this makes your GPU work better please report it).
  --force-fp16          Force fp16.
  --bf16-unet           Run the UNET in bf16. This should only be used for testing stuff.
  --fp16-unet           Store unet weights in fp16.
  --fp8_e4m3fn-unet     Store unet weights in fp8_e4m3fn.
  --fp8_e5m2-unet       Store unet weights in fp8_e5m2.
  --fp16-vae            Run the VAE in fp16, might cause black images.
  --fp32-vae            Run the VAE in full precision fp32.
  --bf16-vae            Run the VAE in bf16.
  --fp8_e4m3fn-text-enc
                        Store text encoder weights in fp8 (e4m3fn variant).
  --fp8_e5m2-text-enc   Store text encoder weights in fp8 (e5m2 variant).
  --fp16-text-enc       Store text encoder weights in fp16.
  --fp32-text-enc       Store text encoder weights in fp32.
  --directml [DIRECTML_DEVICE]
                        Use torch-directml.
  --disable-ipex-optimize
                        Disables ipex.optimize when loading models with Intel GPUs.
  --preview-method [none,auto,latent2rgb,taesd]
                        Default preview method for sampler nodes.
  --use-split-cross-attention
                        Use the split cross attention optimization. Ignored when xformers is used.
  --use-quad-cross-attention
                        Use the sub-quadratic cross attention optimization . Ignored when xformers is used.
  --use-pytorch-cross-attention
                        Use the new pytorch 2.0 cross attention function.
  --disable-xformers    Disable xformers.
  --gpu-only            Store and run everything (text encoders/CLIP models, etc... on the GPU).
  --highvram            By default models will be unloaded to CPU memory after being used. This option keeps them in
                        GPU memory.
  --normalvram          Used to force normal vram use if lowvram gets automatically enabled.
  --lowvram             Split the unet in parts to use less vram.
  --novram              When lowvram isn't enough.
  --cpu                 To use the CPU for everything (slow).
  --disable-smart-memory
                        Force ComfyUI to agressively offload to regular ram instead of keeping models in vram when it
                        can.
  --deterministic       Make pytorch use slower deterministic algorithms when it can. Note that this might not make
                        images deterministic in all cases.
  --dont-print-server   Don't print server output.
  --quick-test-for-ci   Quick test for CI.
  --windows-standalone-build
                        Windows standalone build: Enable convenient things that most people using the standalone
                        windows build will probably enjoy (like auto opening the page on startup).
  --disable-metadata    Disable saving prompt metadata in files.

FETCH DATA from: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/custom-node-list.json
[ComfyUI-Manager] Due to a network error, switching to local mode.
=> custom-node-list.json
=> [WinError 121] 信号灯超时时间已到

那如何解决呢？

ipconfig /flushdns