Adding a remote code in Firefox extension

Hello Team,

Could you please help me resolve this issue with my extension. My extension is taken down for using remote script. Also adding the reviewer comment below

“We don’t allow add-ons to use remote scripts because they can create serious security vulnerabilities. We also need to review all add-on code, and this makes it much more difficult. Please insert those scripts locally from your add-on code.”

This extension just displays the cyptocurrency translation rates, for that i have used the javascript widget and added a line in manifest.json

“content_security_policy”: “script-src ‘self’ ‘sha256-4anbFIT7l1DMya25Vf1O4URJqtLzPKPGznV8LXID1HM=’ ‘unsafe-eval’; object-src ‘self’; style-src ‘unsafe-inline’ ‘self’”,

But if I remove this line the extension does not show the translation.