Missing template "layout/theme.liquid"

The package you received from Themeforest has the following items:

File "Glozin_main_official.zip" is the main item that needed to be uploaded to your store to make the theme work correctly without missing template "layout/theme.liquid".
Folder "Licensing" contains the required license files of Glozin theme.
Folder "Data Import" contains a .zip and a .json file of Glozin's Pages, a .csv file of Glozin's sample Products.
Folder "Demo Preset" contains all the .zip files of all the Glozin's homepages. These files is to upload Glozin theme to your store.