i’m trying to build Meeting app for testing purpose on frappe installed as production environment, actually i’ve created Doctype inside the app, namely:
first check if you have set the developer_mode in site config. Also check in doctype if the custom is checked. In case the custom is checked then doctype files and folder will not be created.
uncheck the custom option and save the doctype again. please check the screenshot below.
If it is custom it means that it’s not part of the app (I think it only exists in DB), this way you can customize ERPNext without touching it’s codebase.