i want to use "pelican content" to create a html file with a '.ipynb' file, however,it goes wrong. (C:\Users\Administrator\Anaconda3) D:\jupyter-blog>pelican content
WARNING: PLUGIN_PATH setting has been replaced by PLUGIN_PATHS, moving it to the new setting name.
WARNING: Defining PLUGIN_PATHS setting as string has been deprecated (should be a list)
ERROR: Cannot load plugin
ipynb.markup
| ImportError: No module named 'IPython'
WARNING: No valid files found in content.
Done: Processed 0 articles, 0 drafts, 0 pages and 0 hidden pages in 0.08 seconds.
i have checked that there's no problem with ipython,but why it still has this error.