Error in App Package (SPFX)
I am getting an error in tutorial 3 of the SPFX. When adding the hello-world-webpart to the app catalog. Says "There were errors when validating the App Package. The package manifest doesn't contain a StartPage element in Properties." I have followed every instruction. Thank you
Since this was more a development guidance question, we’ll close this for now from UserVoice. If you have any specific questions with SPFx, we would suggest to use either MS Tech Community (http://aka.ms/sppnp-community), SP Dev Docs issue list (https://github.com/SharePoint/sp-dev-docs/issues) or https://sharepoint.stackexchange.com/questions/tagged/spfx.
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Chakkaradeep Chandran commented
Please use either SharePoint StackExchange or GitHub Issues for reporting bugs/issues. Uservoice is used to report new feature.
Please make sure you are deploying this package to an Office 365 developer tenant with First Release enabled. This error message means that you don't have the new client-side solution infrastructure in your tenant.