The specified (default) Debian version (${RELEASE}) is not available from the selected mirror. It is possible to continue and select a different release for your installation, but normally you should go back and select a different mirror that does support the correct version.
Lqem n Debian (amezwer) ufrin (${RELEASE}) ulac-it deg tisit i yettwafernen. Yezmer ad tkemmleḍ syen ad tferneḍ lqem-nniḍen i usebded-inek·inem, maca akken ilaq ad tuɣaleḍ ɣer deffir i wakken ad tferneḍ tisit-nniḍen ara isferken lqem ameɣtu.