使用代理时Stable Diffusion无法正常下载各类模型的解决办法

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最近发现了 Stable Diffusion 这个好玩的ai绘画工具，不得不感叹现在ai工具已经进化到这么简单易用的程度，只要下载对应的模型就可以生成各种有意思的图片
就算你没有编程基础，跟着教程也能弄出来
不过使用过程中发现部分功能无法使用
查看日志发现是一些图片生成过程中需要的模型无法下载
在终端export代理地址之后，发现依旧报错

1. ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:997)

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这个报错信息可以看出来就是Python无法验证SSL证书而引起的，搜索之后发现解决方法就是执行如下代码关闭ssl证书的认证

1. # 导入对应库
2. import ssl
3. # 全局关闭ssl验证
4. ssl._create_default_https_context = ssl._create_unverified_context

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跟随 Stable Diffusion 的日志查看到第一个加载的python文件为 lanuch.py ,就位于 stable-diffusion-webui 根目录下，直接在文件顶部加就可以了

之后重启 stable-diffusion-webui，再次使用相同功能生成图片，模型下载成功

完整报错如下，便于大家检索：”

1. Downloading: "https://github.com/xinntao/facexlib/releases/download/v0.1.0/detection_Resnet50_Final.pth" to /stable-diffusion-webui/models/GFPGAN/detection_Resnet50_Final.pthError completing requestArguments: (0, , None, '', '', True, 0, 4, 512, 512, True, 'Lanczos', 'R-ESRGAN 4x+', 0, 0.116, 0.183, 0.214) {}Traceback (most recent call last):  File "/opt/homebrew/Cellar/python@3.10/3.10.10_1/Frameworks/Python.framework/Versions/3.10/lib/python3.10/urllib/request.py", line 1348, in do_open    h.request(req.get_method(), req.selector, req.data, headers,  File "/opt/homebrew/Cellar/python@3.10/3.10.10_1/Frameworks/Python.framework/Versions/3.10/lib/python3.10/http/client.py", line 1282, in request    self._send_request(method, url, body, headers, encode_chunked)  File "/opt/homebrew/Cellar/python@3.10/3.10.10_1/Frameworks/Python.framework/Versions/3.10/lib/python3.10/http/client.py", line 1328, in _send_request    self.endheaders(body, encode_chunked=encode_chunked)  File "/opt/homebrew/Cellar/python@3.10/3.10.10_1/Frameworks/Python.framework/Versions/3.10/lib/python3.10/http/client.py", line 1277, in endheaders    self._send_output(message_body, encode_chunked=encode_chunked)  File "/opt/homebrew/Cellar/python@3.10/3.10.10_1/Frameworks/Python.framework/Versions/3.10/lib/python3.10/http/client.py", line 1037, in _send_output    self.send(msg)  File "/opt/homebrew/Cellar/python@3.10/3.10.10_1/Frameworks/Python.framework/Versions/3.10/lib/python3.10/http/client.py", line 975, in send    self.connect()  File "/opt/homebrew/Cellar/python@3.10/3.10.10_1/Frameworks/Python.framework/Versions/3.10/lib/python3.10/http/client.py", line 1454, in connect    self.sock = self._context.wrap_socket(self.sock,  File "/opt/homebrew/Cellar/python@3.10/3.10.10_1/Frameworks/Python.framework/Versions/3.10/lib/python3.10/ssl.py", line 513, in wrap_socket    return self.sslsocket_class._create(  File "/opt/homebrew/Cellar/python@3.10/3.10.10_1/Frameworks/Python.framework/Versions/3.10/lib/python3.10/ssl.py", line 1071, in _create    self.do_handshake()  File "/opt/homebrew/Cellar/python@3.10/3.10.10_1/Frameworks/Python.framework/Versions/3.10/lib/python3.10/ssl.py", line 1342, in do_handshake    self._sslobj.do_handshake()ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:997)
2. During handling of the above exception, another exception occurred:Traceback (most recent call last):  File "/stable-diffusion-webui/modules/call_queue.py", line 56, in f    res = list(func(*args, **kwargs))  File "/stable-diffusion-webui/modules/call_queue.py", line 37, in f    res = func(*args, **kwargs)  File "/stable-diffusion-webui/modules/postprocessing.py", line 56, in run_postprocessing    scripts.scripts_postproc.run(pp, args)  File "/stable-diffusion-webui/modules/scripts_postprocessing.py", line 130, in run    script.process(pp, **process_args)  File "/stable-diffusion-webui/scripts/postprocessing_gfpgan.py", line 26, in process    restored_img = gfpgan_model.gfpgan_fix_faces(np.array(pp.image, dtype=np.uint8))  File "/stable-diffusion-webui/modules/gfpgan_model.py", line 53, in gfpgan_fix_faces    model = gfpgann()  File "/stable-diffusion-webui/modules/gfpgan_model.py", line 40, in gfpgann    model = gfpgan_constructor(model_path=model_file, upscale=1, arch='clean', channel_multiplier=2, bg_upsampler=None, device=devices.device_gfpgan)  File "/stable-diffusion-webui/venv/lib/python3.10/site-packages/gfpgan/utils.py", line 79, in __init__    self.face_helper = FaceRestoreHelper(  File "/stable-diffusion-webui/venv/lib/python3.10/site-packages/facexlib/utils/face_restoration_helper.py", line 99, in __init__    self.face_det = init_detection_model(det_model, half=False, device=self.device, model_rootpath=model_rootpath)  File "/stable-diffusion-webui/venv/lib/python3.10/site-packages/facexlib/detection/__init__.py", line 18, in init_detection_model    model_path = load_file_from_url(  File "/stable-diffusion-webui/modules/gfpgan_model.py", line 94, in facex_load_file_from_url    return facex_load_file_from_url_orig(**dict(kwargs, save_dir=model_path, model_dir=None))  File "/stable-diffusion-webui/venv/lib/python3.10/site-packages/facexlib/utils/misc.py", line 77, in load_file_from_url    download_url_to_file(url, cached_file, hash_prefix=None, progress=progress)  File "/stable-diffusion-webui/venv/lib/python3.10/site-packages/torch/hub.py", line 611, in download_url_to_file    u = urlopen(req)  File "/opt/homebrew/Cellar/python@3.10/3.10.10_1/Frameworks/Python.framework/Versions/3.10/lib/python3.10/urllib/request.py", line 216, in urlopen    return opener.open(url, data, timeout)  File "/opt/homebrew/Cellar/python@3.10/3.10.10_1/Frameworks/Python.framework/Versions/3.10/lib/python3.10/urllib/request.py", line 519, in open    response = self._open(req, data)  File "/opt/homebrew/Cellar/python@3.10/3.10.10_1/Frameworks/Python.framework/Versions/3.10/lib/python3.10/urllib/request.py", line 536, in _open    result = self._call_chain(self.handle_open, protocol, protocol +  File "/opt/homebrew/Cellar/python@3.10/3.10.10_1/Frameworks/Python.framework/Versions/3.10/lib/python3.10/urllib/request.py", line 496, in _call_chain    result = func(*args)  File "/opt/homebrew/Cellar/python@3.10/3.10.10_1/Frameworks/Python.framework/Versions/3.10/lib/python3.10/urllib/request.py", line 1391, in https_open    return self.do_open(http.client.HTTPSConnection, req,  File "/opt/homebrew/Cellar/python@3.10/3.10.10_1/Frameworks/Python.framework/Versions/3.10/lib/python3.10/urllib/request.py", line 1351, in do_open    raise URLError(err)urllib.error.URLError: ^CInterrupted with signal 2 in

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如果没有代理的话，可以参考 https://zhuanlan.zhihu.com/p/609577723?utm_id=0
使用 ghproxy 来解决，但是需要修改的地方较多
最后附上两张ai生成的图片，使用的mbp14 2021 款，性能有限都是跑的低分辨率图片
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来源：https://blog.csdn.net/weixin_37211894/article/details/130150036
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