FileNotFoundError: [Errno 2] No such file or directory: 'katex': 'katex'

[Murtaza Nazir]

Something wrong with sphinxcontrib-katex?

# Loaded extensions:

# sphinx.ext.mathjax (2.2.0) from /home/murtaza/anaconda3/lib/python3.7/site-packages/sphinx/ext/mathjax.py

# sphinxcontrib.applehelp (1.0.1) from /home/murtaza/anaconda3/lib/python3.7/site-packages/sphinxcontrib/applehelp/__init__.py

# sphinxcontrib.devhelp (1.0.1) from /home/murtaza/anaconda3/lib/python3.7/site-packages/sphinxcontrib/devhelp/__init__.py

# sphinxcontrib.htmlhelp (1.0.2) from /home/murtaza/anaconda3/lib/python3.7/site-packages/sphinxcontrib/htmlhelp/__init__.py

# sphinxcontrib.serializinghtml (1.1.3) from /home/murtaza/anaconda3/lib/python3.7/site-packages/sphinxcontrib/serializinghtml/__init__.py

# sphinxcontrib.qthelp (1.0.2) from /home/murtaza/anaconda3/lib/python3.7/site-packages/sphinxcontrib/qthelp/__init__.py

# alabaster (0.7.12) from /home/murtaza/anaconda3/lib/python3.7/site-packages/alabaster/__init__.py

# sphinx.ext.autodoc (2.2.0) from /home/murtaza/anaconda3/lib/python3.7/site-packages/sphinx/ext/autodoc/__init__.py

# sphinx.ext.autosummary (2.2.0) from /home/murtaza/anaconda3/lib/python3.7/site-packages/sphinx/ext/autosummary/__init__.py

# sphinx.ext.doctest (2.2.0) from /home/murtaza/anaconda3/lib/python3.7/site-packages/sphinx/ext/doctest.py

# sphinx.ext.intersphinx (2.2.0) from /home/murtaza/anaconda3/lib/python3.7/site-packages/sphinx/ext/intersphinx.py

# sphinx.ext.todo (2.2.0) from /home/murtaza/anaconda3/lib/python3.7/site-packages/sphinx/ext/todo.py

# sphinx.ext.coverage (2.2.0) from /home/murtaza/anaconda3/lib/python3.7/site-packages/sphinx/ext/coverage.py

# sphinx.ext.napoleon (2.2.0) from /home/murtaza/anaconda3/lib/python3.7/site-packages/sphinx/ext/napoleon/__init__.py

# sphinx.ext.viewcode (2.2.0) from /home/murtaza/anaconda3/lib/python3.7/site-packages/sphinx/ext/viewcode.py

# sphinxcontrib.katex (0.6.1) from /home/murtaza/anaconda3/lib/python3.7/site-packages/sphinxcontrib/katex.py

Traceback (most recent call last):

File "/home/murtaza/anaconda3/lib/python3.7/site-packages/sphinx/cmd/build.py", line 276, in build_main

app.build(args.force_all, filenames)

File "/home/murtaza/anaconda3/lib/python3.7/site-packages/sphinx/application.py", line 346, in build

self.builder.build_update()

File "/home/murtaza/anaconda3/lib/python3.7/site-packages/sphinx/builders/__init__.py", line 299, in build_update

len(to_build))

File "/home/murtaza/anaconda3/lib/python3.7/site-packages/sphinx/builders/__init__.py", line 361, in build

self.write(docnames, list(updated_docnames), method)

File "/home/murtaza/anaconda3/lib/python3.7/site-packages/sphinx/builders/__init__.py", line 535, in write

self._write_serial(sorted(docnames))

File "/home/murtaza/anaconda3/lib/python3.7/site-packages/sphinx/builders/__init__.py", line 545, in _write_serial

self.write_doc(docname, doctree)

File "/home/murtaza/anaconda3/lib/python3.7/site-packages/sphinx/builders/html.py", line 616, in write_doc

self.docwriter.write(doctree, destination)

File "/home/murtaza/anaconda3/lib/python3.7/site-packages/docutils/writers/__init__.py", line 78, in write

self.translate()

File "/home/murtaza/anaconda3/lib/python3.7/site-packages/sphinx/writers/html.py", line 59, in translate

self.document.walkabout(visitor)

File "/home/murtaza/anaconda3/lib/python3.7/site-packages/docutils/nodes.py", line 178, in walkabout

if child.walkabout(visitor):

File "/home/murtaza/anaconda3/lib/python3.7/site-packages/docutils/nodes.py", line 178, in walkabout

if child.walkabout(visitor):

File "/home/murtaza/anaconda3/lib/python3.7/site-packages/docutils/nodes.py", line 178, in walkabout

if child.walkabout(visitor):

[Previous line repeated 9 more times]

File "/home/murtaza/anaconda3/lib/python3.7/site-packages/docutils/nodes.py", line 170, in walkabout

visitor.dispatch_visit(self)

File "/home/murtaza/anaconda3/lib/python3.7/site-packages/docutils/nodes.py", line 1912, in dispatch_visit

return method(node)

File "/home/murtaza/anaconda3/lib/python3.7/site-packages/sphinx/writers/html5.py", line 861, in visit_math

visit(self, node)

File "/home/murtaza/anaconda3/lib/python3.7/site-packages/sphinxcontrib/katex.py", line 98, in html_visit_math

self.body.append(run_katex(get_latex(node)))

File "/home/murtaza/anaconda3/lib/python3.7/site-packages/sphinxcontrib/katex.py", line 88, in run_katex

env=os.environ.copy()

File "/home/murtaza/anaconda3/lib/python3.7/subprocess.py", line 775, in __init__

restore_signals, start_new_session)

File "/home/murtaza/anaconda3/lib/python3.7/subprocess.py", line 1522, in _execute_child

raise child_exception_type(errno_num, err_msg, err_filename)

FileNotFoundError: [Errno 2] No such file or directory: 'katex': 'katex'

[Komiya Takeshi]

Hi,

It seems sphinxcontrib-katex tries to invoke katex command, but failed
because of command not found.
I guess you've enabled katex_prerender feature, right? If so, you need
to install katex command on your local.
Could you check it please?

Thanks,
Takeshi KOMIYA

2020年10月8日(木) 18:24 Murtaza Nazir <themurt...@gmail.com>:

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