```bash [...] . build_book INFO:bookbook.latex:Combined 4 files INFO:bookbook.latex:source_dir.exists()=True Path(template_file).exists()=True INFO:bookbook.latex:Converting to pdf INFO:bookbook.latex:Path(exporter.template_file).exists()=True TaskError - taskid:build_book PythonAction Error Traceback (most recent call last): File "/Users/boileau/Documents/Enseignement/2020_Calcul_parallele/cours-opencl/.env/lib/python3.8/site-packages/doit/action.py", line 437, in execute returned_value = self.py_callable(*self.args, **kwargs) File "/Users/boileau/Documents/Enseignement/2020_Calcul_parallele/cours-opencl/.env/lib/python3.8/site-packages/nbcourse/nbcourse.py", line 210, in build_book book.build() File "/Users/boileau/Documents/Enseignement/2020_Calcul_parallele/cours-opencl/.env/lib/python3.8/site-packages/nbcourse/book.py", line 64, in build combine_and_convert(Path('.'), File "/Users/boileau/Documents/Enseignement/2020_Calcul_parallele/cours-opencl/.env/lib/python3.8/site-packages/bookbook/latex.py", line 147, in combine_and_convert export(combined_nb, output_file, pdf=pdf, template_file=template_file) File "/Users/boileau/Documents/Enseignement/2020_Calcul_parallele/cours-opencl/.env/lib/python3.8/site-packages/bookbook/latex.py", line 140, in export output, resources = exporter.from_notebook_node(combined_nb, resources) File "/Users/boileau/Documents/Enseignement/2020_Calcul_parallele/cours-opencl/.env/lib/python3.8/site-packages/nbconvert/exporters/pdf.py", line 168, in from_notebook_node latex, resources = super().from_notebook_node( File "/Users/boileau/Documents/Enseignement/2020_Calcul_parallele/cours-opencl/.env/lib/python3.8/site-packages/nbconvert/exporters/latex.py", line 77, in from_notebook_node return super().from_notebook_node(nb, resources, **kw) File "/Users/boileau/Documents/Enseignement/2020_Calcul_parallele/cours-opencl/.env/lib/python3.8/site-packages/nbconvert/exporters/templateexporter.py", line 384, in from_notebook_node output = self.template.render(nb=nb_copy, resources=resources) File "/Users/boileau/Documents/Enseignement/2020_Calcul_parallele/cours-opencl/.env/lib/python3.8/site-packages/nbconvert/exporters/templateexporter.py", line 148, in template self._template_cached = self._load_template() File "/Users/boileau/Documents/Enseignement/2020_Calcul_parallele/cours-opencl/.env/lib/python3.8/site-packages/nbconvert/exporters/templateexporter.py", line 355, in _load_template return self.environment.get_template(template_file) File "/Users/boileau/Documents/Enseignement/2020_Calcul_parallele/cours-opencl/.env/lib/python3.8/site-packages/jinja2/environment.py", line 888, in get_template return self._load_template(name, self.make_globals(globals)) File "/Users/boileau/Documents/Enseignement/2020_Calcul_parallele/cours-opencl/.env/lib/python3.8/site-packages/jinja2/environment.py", line 861, in _load_template template = self.loader.load(self, name, globals) File "/Users/boileau/Documents/Enseignement/2020_Calcul_parallele/cours-opencl/.env/lib/python3.8/site-packages/jinja2/loaders.py", line 437, in load raise TemplateNotFound(name) jinja2.exceptions.TemplateNotFound: bookbook_filename.tex ######################################## ```