I try to upload a Chrome extension and I get this error:
An error occurred: Your sentence is not processed.
The package is not found manifesto. Put manifesto manifest.json in the root directory of the zip package.
I have manifest.json in root directory
Most probably, your ZIP contains the folder with your extension:
extension.zip
+-> extension_folder
+-> manifest.json
+-> script.js
+-> resources
+-> ...
...
...
However, the docs clearly state that the root of the archive should contain the manifest, e.g.
extension.zip
+-> manifest.json
+-> script.js
+-> resources
+-> ...
...
...
In short: don't zip the folder itself, zip the files in it.