Hello I'm new on Office 365/SharePoint 2013 Apps development, as first test project I have created an Outlook App (Mail app for Office), I didn't edit the simple code generated by NAPA, normally it will work, but when I deploy the app I get this error :
App Error Something went wrong and we couldn't start this app. Please try again later or contact your system administrator.
After some debugging, via the F12 Tools, I find that the https://appsforoffice.microsoft.com/lib/1.0/hosted/office.js is not available! Is there a solution for this problem ?
EDIT : The site is available over http but not over https, then I tried to use it but it still not working:
The page at 'https://grindi-81a84eec62----.sharepoint.com/FirstMailApp/App/Home/Home.htm…#path=/mail' was loaded over HTTPS, but ran insecure content from 'http://appsforoffice.microsoft.com/lib/1.0/hosted/office.js': this content should also be loaded over HTTPS.