This is my first time uploading anything to the apple store and i might be missing something because I am building a safari extension and while using xcode and after creating the archive, when i click on upload to app store i get the following error:

(My developer account is currently active and paid)

I read online that some configuration need to be done on the profile and certificate.

I created:

• a certificate but its not linked to my keychain on the computer (is this required?)
• an identifier and thats the one that i am using on xcode as bundle identifier.
• an app on app store connect with all the details needed for the extension.

is there something that i am missing in the process and if anyone is familiar with the error attached, how can i possibly upload my extension to the apple store?