Google Analytics on Firefox add-on not working

I added google analytics and correctly added CSP to the manifest.json (like here: “content_security_policy”: "script-src ‘self’ https://ssl.google-analytics.com https: //www.google-analytics .com: object-src ‘self’ ") no error in the console but it does not work when I consult Real Time in Analytics I have no data.
I also added CSP in the but that does not change anything either …

Any idea ?
Thank you