OSError: Error reading /app/webpack-stats.json.

[danielmaddern]

How do we generate /app/webpack-stats.json?

OSError: Error reading /app/webpack-stats.json. Are you sure webpack has generated the file and the path is correct?

Stacktrace:
Traceback (most recent call last):
File "/usr/local/lib/python3.5/site-packages/django/contrib/staticfiles/handlers.py", line 63, in call
return self.application(environ, start_response)
File "/usr/local/lib/python3.5/site-packages/django/core/handlers/wsgi.py", line 170, in call
response = self.get_response(request)
File "/usr/local/lib/python3.5/site-packages/django/core/handlers/base.py", line 124, in get_response
response = self._middleware_chain(request)
File "/usr/local/lib/python3.5/site-packages/django/core/handlers/exception.py", line 41, in inner
response = response_for_exception(request, exc)
File "/usr/local/lib/python3.5/site-packages/django/core/handlers/exception.py", line 86, in response_for_exception
response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
File "/usr/local/lib/python3.5/site-packages/django/core/handlers/exception.py", line 128, in handle_uncaught_exception
return debug.technical_500_response(request, *exc_info)
File "/usr/local/lib/python3.5/site-packages/django_extensions/management/technical_response.py", line 6, in null_technical_500_response
six.reraise(exc_type, exc_value, tb)
File "/usr/local/lib/python3.5/site-packages/six.py", line 686, in reraise
raise value
File "/usr/local/lib/python3.5/site-packages/django/core/handlers/exception.py", line 39, in inner
response = get_response(request)
File "/usr/local/lib/python3.5/site-packages/django/core/handlers/base.py", line 249, in _legacy_get_response
response = self._get_response(request)
File "/usr/local/lib/python3.5/site-packages/django/core/handlers/base.py", line 217, in _get_response
response = self.process_exception_by_middleware(e, request)
File "/usr/local/lib/python3.5/site-packages/django/core/handlers/base.py", line 215, in _get_response
response = response.render()
File "/usr/local/lib/python3.5/site-packages/django/template/response.py", line 109, in render
self.content = self.rendered_content
File "/usr/local/lib/python3.5/site-packages/django/template/response.py", line 86, in rendered_content
content = template.render(context, self._request)
File "/usr/local/lib/python3.5/site-packages/django/template/backends/django.py", line 66, in render
return self.template.render(context)
File "/usr/local/lib/python3.5/site-packages/django/template/base.py", line 208, in render
return self._render(context)
File "/usr/local/lib/python3.5/site-packages/django/test/utils.py", line 94, in instrumented_test_render
return self.nodelist.render(context)
File "/usr/local/lib/python3.5/site-packages/django/template/base.py", line 994, in render
bit = node.render_annotated(context)
File "/usr/local/lib/python3.5/site-packages/django/template/base.py", line 961, in render_annotated
return self.render(context)
File "/usr/local/lib/python3.5/site-packages/django/template/loader_tags.py", line 174, in render
return compiled_parent._render(context)
File "/usr/local/lib/python3.5/site-packages/django/test/utils.py", line 94, in instrumented_test_render
return self.nodelist.render(context)
File "/usr/local/lib/python3.5/site-packages/django/template/base.py", line 994, in render
bit = node.render_annotated(context)
File "/usr/local/lib/python3.5/site-packages/django/template/base.py", line 961, in render_annotated
return self.render(context)
File "/usr/local/lib/python3.5/site-packages/django/template/loader_tags.py", line 70, in render
result = block.nodelist.render(context)
File "/usr/local/lib/python3.5/site-packages/django/template/base.py", line 994, in render
bit = node.render_annotated(context)
File "/usr/local/lib/python3.5/site-packages/django/template/base.py", line 961, in render_annotated
return self.render(context)
File "/usr/local/lib/python3.5/site-packages/django/template/library.py", line 203, in render
output = self.func(*resolved_args, **resolved_kwargs)
File "/usr/local/lib/python3.5/site-packages/webpack_loader/templatetags/webpack_loader.py", line 40, in render_bundle
return render_as_tags(_get_bundle(bundle_name, extension, config), attrs)
File "/usr/local/lib/python3.5/site-packages/webpack_loader/templatetags/webpack_loader.py", line 32, in _get_bundle
bundle = get_loader(config).get_bundle(bundle_name)
File "/usr/local/lib/python3.5/site-packages/webpack_loader/loader.py", line 58, in get_bundle
assets = self.get_assets()
File "/usr/local/lib/python3.5/site-packages/webpack_loader/loader.py", line 37, in get_assets
return self._load_assets()
File "/usr/local/lib/python3.5/site-packages/webpack_loader/loader.py", line 30, in _load_assets
self.config['STATS_FILE']))
OSError: Error reading /app/webpack-stats.json. Are you sure webpack has generated the file and the path is correct?