Update T-appendix.jupyter-installation-and-setup.ipynb

新增安装 toc 插件失败的解决方式

Author: koreQAQ

T-appendix.jupyter-installation-and-setup.ipynb

@@ -323,6 +323,22 @@
     "\n",
     "![](https://github.com/jupyterlab/jupyterlab-toc/raw/master/toc.gif)\n",
     "\n",
+    "当在 Mac OS环境下使用`jupyter labextension install @jupyterlab/toc`命令安装 toc 插件时，可能会出现下面的错误：\n",
+    "```bash\n",
+    "jupyter labextension install @jupyterlab/toc\n",
+    "An error occured.\n",
+    "ValueError: Please install nodejs >=12.0.0 before continuing. nodejs may be installed using conda or directly from the nodejs website.\n",
+    "See the log file for details:  /var/folders/sp/06qflh5d5vlc95zgww49ntpc0000gn/T/jupyterlab-debug-dpz_hyyz.log\n",
+    "```\n",
+    "当出现错误提示时，需要使用下面的命令，来安装相对高版本的 nodejs :\n",
+    "```bash\n",
+    "conda install nodejs -c conda-forge --repodata-fn=repodata.json\n",
+    "```\n",
+    "在成功进行 nodejs 版本之后 ，需要重新安装 toc 插件：\n",
+    "```bash\n",
+    "jupyter labextension install @jupyterlab/toc\n",
+    "```\n",
+    "\n",
     "jupyterlab_sublime 则可以让你在 Jupyter lab 的 cell 中，使用跟 SublimeText 一样的快捷键，比如 `⌘ D` 能够多选其它与当前选中内容一样的内容；比如 `⌘` 加鼠标点击，可以生成多个可编辑点……\n",
     "\n",
     "![](http://blog.rtwilson.com/wp-content/uploads/2016/03/IPyNbSublime.gif)"
@@ -659,4 +675,4 @@
  },
  "nbformat": 4,
  "nbformat_minor": 2
-}
+}