Unable to make the paper

[naveensaigit]

I get the following traceback when I try to make the paper -

(base) naveen@naveen-Legion-Y545:~/dev/symengine-paper$ make
mkdir -p images
cp pdfs/n-pendulum-with-cart.pdf images/n-pendulum-with-cart.pdf
cd benchmarks; jupyter nbconvert --execute  --to notebook Plots.ipynb
[NbConvertApp] Converting notebook Plots.ipynb to notebook
Traceback (most recent call last):
  File "/home/naveen/anaconda3/bin/jupyter-nbconvert", line 11, in <module>
    sys.exit(main())
  File "/home/naveen/anaconda3/lib/python3.8/site-packages/jupyter_core/application.py", line 270, in launch_instance
    return super(JupyterApp, cls).launch_instance(argv=argv, **kwargs)
  File "/home/naveen/anaconda3/lib/python3.8/site-packages/traitlets/config/application.py", line 664, in launch_instance
    app.start()
  File "/home/naveen/anaconda3/lib/python3.8/site-packages/nbconvert/nbconvertapp.py", line 340, in start
    self.convert_notebooks()
  File "/home/naveen/anaconda3/lib/python3.8/site-packages/nbconvert/nbconvertapp.py", line 510, in convert_notebooks
    self.convert_single_notebook(notebook_filename)
  File "/home/naveen/anaconda3/lib/python3.8/site-packages/nbconvert/nbconvertapp.py", line 481, in convert_single_notebook
    output, resources = self.export_single_notebook(notebook_filename, resources, input_buffer=input_buffer)
  File "/home/naveen/anaconda3/lib/python3.8/site-packages/nbconvert/nbconvertapp.py", line 410, in export_single_notebook
    output, resources = self.exporter.from_filename(notebook_filename, resources=resources)
  File "/home/naveen/anaconda3/lib/python3.8/site-packages/nbconvert/exporters/exporter.py", line 179, in from_filename
    return self.from_file(f, resources=resources, **kw)
  File "/home/naveen/anaconda3/lib/python3.8/site-packages/nbconvert/exporters/exporter.py", line 197, in from_file
    return self.from_notebook_node(nbformat.read(file_stream, as_version=4), resources=resources, **kw)
  File "/home/naveen/anaconda3/lib/python3.8/site-packages/nbconvert/exporters/notebook.py", line 32, in from_notebook_node
    nb_copy, resources = super(NotebookExporter, self).from_notebook_node(nb, resources, **kw)
  File "/home/naveen/anaconda3/lib/python3.8/site-packages/nbconvert/exporters/exporter.py", line 139, in from_notebook_node
    nb_copy, resources = self._preprocess(nb_copy, resources)
  File "/home/naveen/anaconda3/lib/python3.8/site-packages/nbconvert/exporters/exporter.py", line 316, in _preprocess
    nbc, resc = preprocessor(nbc, resc)
  File "/home/naveen/anaconda3/lib/python3.8/site-packages/nbconvert/preprocessors/base.py", line 47, in __call__
    return self.preprocess(nb, resources)
  File "/home/naveen/anaconda3/lib/python3.8/site-packages/nbconvert/preprocessors/execute.py", line 403, in preprocess
    with self.setup_preprocessor(nb, resources, km=km):
  File "/home/naveen/anaconda3/lib/python3.8/contextlib.py", line 113, in __enter__
    return next(self.gen)
  File "/home/naveen/anaconda3/lib/python3.8/site-packages/nbconvert/preprocessors/execute.py", line 345, in setup_preprocessor
    self.km, self.kc = self.start_new_kernel(**kwargs)
  File "/home/naveen/anaconda3/lib/python3.8/site-packages/nbconvert/preprocessors/execute.py", line 291, in start_new_kernel
    km.start_kernel(extra_arguments=self.extra_arguments, **kwargs)
  File "/home/naveen/anaconda3/lib/python3.8/site-packages/jupyter_client/manager.py", line 304, in start_kernel
    kernel_cmd, kw = self.pre_start_kernel(**kw)
  File "/home/naveen/anaconda3/lib/python3.8/site-packages/jupyter_client/manager.py", line 257, in pre_start_kernel
    kernel_cmd = self.format_kernel_cmd(extra_arguments=extra_arguments)
  File "/home/naveen/anaconda3/lib/python3.8/site-packages/jupyter_client/manager.py", line 181, in format_kernel_cmd
    cmd = self.kernel_spec.argv + extra_arguments
  File "/home/naveen/anaconda3/lib/python3.8/site-packages/jupyter_client/manager.py", line 87, in kernel_spec
    self._kernel_spec = self.kernel_spec_manager.get_kernel_spec(self.kernel_name)
  File "/home/naveen/anaconda3/lib/python3.8/site-packages/jupyter_client/kernelspec.py", line 235, in get_kernel_spec
    raise NoSuchKernel(kernel_name)
jupyter_client.kernelspec.NoSuchKernel: No such kernel named python2
make: *** [Makefile:14: images] Error 1