I just had this same issue and fixed it by removing this line from my settings file,
STATICFILES_STORAGE = 'whitenoise.django.GzipManifestStaticFilesStorage'
I got this line from the Heroku documentation page…
I just had this same issue and fixed it by removing this line from my settings file,
STATICFILES_STORAGE = 'whitenoise.django.GzipManifestStaticFilesStorage'
I got this line from the Heroku documentation page…