[ERROR] Traceback (most recent call last):


 "/usr/local/lib/python3.5/dist-packages/nbgrader/converters/base.py", line 288, in convert_notebooks

self.convert_single_notebook(notebook_filename)


 "/usr/local/lib/python3.5/dist-packages/nbgrader/converters/base.py", line 244, in convert_single_notebook

output, resources = self.exporter.from_filename(notebook_filename, resources=resources)


 "/usr/local/lib/python3.5/dist-packages/nbconvert/exporters/exporter.py", line 172, in from_filename

return self.from_file(f, resources=resources, **kw)


 "/usr/local/lib/python3.5/dist-packages/nbconvert/exporters/exporter.py", line 190, in from_file

return self.from_notebook_node(nbformat.read(file_stream, as_version=4), resources=resources, **kw)


 "/usr/local/lib/python3.5/dist-packages/nbconvert/exporters/notebook.py", line 31, in from_notebook_node

nb_copy, resources = super(NotebookExporter, self).from_notebook_node(nb, resources, **kw)


 "/usr/local/lib/python3.5/dist-packages/nbconvert/exporters/exporter.py", line 132, in from_notebook_node

nb_copy, resources = self._preprocess(nb_copy, resources)


 "/usr/local/lib/python3.5/dist-packages/nbconvert/exporters/exporter.py", line 309, in _preprocess

nbc, resc = preprocessor(nbc, resc)


 "/usr/local/lib/python3.5/dist-packages/nbconvert/preprocessors/base.py", line 47, in __call__

return self.preprocess(nb,resources)


 "/usr/local/lib/python3.5/dist-packages/nbgrader/preprocessors/headerfooter.py", line 23, in preprocess

with open(self.header, 'r') as fh:


NotFoundError: [Errno 2] No such file or directory: 'source/header.ipynb'



Traceback (most recent call last):


 "launcher.py", line 89, in <module>

main(data1)


 "launcher.py", line 59, in main

rsp = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)


 "H:\python\python3.7\lib\subprocess.py", line 775, in __init__

restore_signals, start_new_session)


 "H:\python\python3.7\lib\subprocess.py", line 1178, in _execute_child

startupinfo)

NotFoundError: [WinError 2] 系统找不到指定的文件。