I am trying to publish my app on the google play store i followed all the steps in the flutter documentation but when i upload the app bundle it shows an error : ou have imported an APK or an app bundle signed with a certificate that is not yet valid You must sign either with a valid certificate . i didnt understand what is the problem .
i tried to upload to the play store but it didnt accept the appbundle for the reason i mentionned . i also tried to generate a certificate from another computer but it didnt work