Hello, i have to make some changes to the document template of a SharePoint library. The library is using an InfoPath form as its document template.
When i try to publish the form to the SharePoint library, i get the error attached (Only site collection administrators can publish sandboxed solutions).
Please note that i am already a site collection admin.
Am i getting this error because Sandbox has been deprecated in SharePoint Online? If so, then how come the existing form is already working correctly with all its functionality?
Please help me resolve this issue.
Thank you.
