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Internal error from https://cgi.cse.unsw.edu.au/~cs1911/23T2/flask.cgi/lec/8-4_arrays/notes: 404 Not Found: The requested URL was not found on the server. If you entered the URL manually please check your spelling and try again. Traceback (most recent call last): File "/import/adams/A/cs1911/public_html/23T2/lib/python/cse/class_webpages.py", line 196, in check_send_file return send_file(pathname) ^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3/dist-packages/flask/helpers.py", line 537, in send_file return werkzeug.utils.send_file( # type: ignore[return-value] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3/dist-packages/werkzeug/utils.py", line 440, in send_file stat = os.stat(path) ^^^^^^^^^^^^^ FileNotFoundError: [Errno 2] No such file or directory: '/import/adams/A/cs1911/public_html/23T2/lec/8-4_arrays_notes.pdf' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/usr/lib/python3/dist-packages/flask/app.py", line 1820, in full_dispatch_request rv = self.dispatch_request() ^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3/dist-packages/flask/app.py", line 1796, in dispatch_request return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/import/adams/A/cs1911/public_html/23T2/lib/python/cse/class_webpages.py", line 136, in lecture_slides_url return check_send_file(course_configuration['lecture_directory'], '%s%s.pdf' % (topic, '_notes' if slides_or_notes == 'notes' else '')) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/import/adams/A/cs1911/public_html/23T2/lib/python/cse/class_webpages.py", line 198, in check_send_file abort(404) File "/usr/lib/python3/dist-packages/flask/helpers.py", line 310, in abort current_app.aborter(code, *args, **kwargs) File "/usr/lib/python3/dist-packages/werkzeug/exceptions.py", line 864, in __call__ raise self.mapping[code](*args, **kwargs) werkzeug.exceptions.NotFound: 404 Not Found: The requested URL was not found on the server. If you entered the URL manually please check your spelling and try again.