Google App Signing issue. Signing is not resolved.

Hello Team,

I did all the steps like in docs while building and uploading an app to google play.

I let expo to handle the process of creating all keys.
I did first upload of apk to google play.

Then I noticed that App Singing section in google play is not resolve and wants me to upload certificates.

Could you please let me know what should I do with this?
All apks are built with expo.