我正在使用conda环境运行jupyter笔记本。它正在运行以下jupyter版本：
jupyter_client 5.2.4 py_0 conda-forge
jupyter_console 5.2.0 py36_0
jupyter_contrib_core 0.3.3 py_2 conda-forge
jupyter_core 4.4.0 py_0 conda-forge
jupyter_highlight_selected_word 0.2.0 py36_1000 conda-forge
jupyter_latex_envs 1.4.4 py36_1000 conda-forge
jupyterthemes 0.20.0 py_0 conda-forge
notebook 5.6.0 py36_0
启动笔记本电脑并打开新的python3笔记本电脑时，一切正常。但是，如果我创建一个文件夹，然后在该文件夹中打开一个新的python3笔记本，则会收到以下超时错误：
[I 13:38:46.390 NotebookApp] 302 GET /?token=1dfe4a712d25ba1cacf55d7270292ccf9f06dbad4ce76ce6 (10.0.0.75) 1.73ms
[W 13:39:03.859 NotebookApp] 404 GET /nbextensions/widgets/notebook/js/extension.js?v=20190112133614 (10.0.0.75) 20.30ms referer=http://localhost:9999/notebooks/Untitled.ipynb
[I 13:39:04.292 NotebookApp] Kernel started: 53495390-0794-48d2-b2bb-21998ecc97f4
[I 13:39:06.521 NotebookApp] Adapting to protocol v5.1 for kernel 53495390-0794-48d2-b2bb-21998ecc97f4
[I 13:39:15.634 NotebookApp] Starting buffering for 53495390-0794-48d2-b2bb-21998ecc97f4:e377f92bbabd4f47b024a6bf73b98249
[W 13:39:43.618 NotebookApp] 404 GET /nbextensions/widgets/notebook/js/extension.js?v=20190112133614 (10.0.0.75) 2.27ms referer=http://localhost:9999/notebooks/temp/Untitled.ipynb
[I 13:39:43.751 NotebookApp] Kernel started: 520a3c63-d490-4e66-8ddf-506d5ba90b9d
[W 13:40:43.844 NotebookApp] Timeout waiting for kernel_info reply from 520a3c63-d490-4e66-8ddf-506d5ba90b9d
我已经尝试了好几种方法，但没有一个能解决这个问题：
先谢谢了。