Add-On Publication problem

I have a problem with the publication of a Firefox extension that I just created. The publication page says “No install.rdf or manifest.json found - Add-on missing manifest.” but the manifest file is present in the .zip I send … an idea?

This is the code of my manifest.json :

{

“applications”: {
“gecko”: {
“id”: “florian@mustsee.earth”,
“strict_min_version”: “42.0”
}
},

“background”: {
“scripts”: [“bg.js”]
},

“content_security_policy”: “script-src ‘self’ https://ssl.google-analytics.com https://www.google-analytics.com; object-src ‘self’”,

“default_locale”: “en”,

“description”: “Discover the world’s most beautiful places at every opened tab.”,

“icons”: {
“16”: “icons/icon16.png”,
“19”: “icons/icon19.png”,
“48”: “icons/icon48.png”,
“128”: “icons/icon128.png”
},

“manifest_version”: 2,

“name”: “Mustsee”,

“permissions”: [“webNavigation”],

“version”: “1.0”
}

Is the manifest directly in the ZIP or in a subfolder?

Directy in the zip…

addon.zip / manifest.json

And always “Erreur: All add-ons require a manifest file.”

Also I also installed it temporarily and it does not indicate any problem with the manifest.json

Any idea?