Cannot deploy any Add-in to my SharePoint Online dev tenant due to this error when I click on run:
"Error occurred in deployment step 'Install SharePoint Add-in': Archive file cannot be size 0."
I had a working app earlier this week, changed nothing to it and the next day this error showed up.
It seems to be a tenant related issue, as creating a new dev site collection and a new, default app for SharePoint gave the same error. This implies it is not my code raising this error during the deployment step. Colleagues of mine are having the same issue.
Although apps for SharePoint Online / Add-ins for SharePoint Online have nothing to do with sandboxed solutions, my tenant could be suffering from this error due to a recent update that deprecates these sandboxed solutions.. But I am not sure.
Any help is much appreciated!