Could not distribute web extension due to localization error

Hi,
I converted my chrome extension to safari web extension. I am trying to distribute this extension to the app store connect, but getting an error regarding my message.json files.

For each of my localization files I am getting an error ITMS-90862
The name field must be present, of string type, and 40 or fewer characters long."
and
The description field must be present, of string type, and 40 or fewer characters long.
This is how it is configured in the manifest.json:

Code Block 
    "name": "__MSG_appName__",
    "description": "__MSG_appDescription__"

I tried adding name and description fields to all of them, but it didn't work.
I tried to change my manifest.json name and description entries to be __MSG_name__ and __MSG_description__ and added name and description to the files - and it didn't work.

Any ideas?

Thanks