When I install the analyst theme in wordpress by uploading the zip file, I receive the error message: "The package could not be installed. The theme is missing the style.css stylesheet."

So I tried moving the style.css file to the main directory of the theme folder, then tried uploading again, and this time received "The package could not be installed. The style.css stylesheet doesn't contain a valid theme header."

Can you please assist me?

Thank you!