The specified (default) Debian version (${RELEASE}) is not available from the selected mirror. It is possible to continue and select a different release for your installation, but normally you should go back and select a different mirror that does support the correct version.
የተጠቀሰው (ቀዳሚ) የደቢያን ዝርያ (${RELEASE}) በተመረጠው መስተዋት ላይ አልተገኘም። ሌላ ዝርያ በመምረጥ መቀጠል ይቻላል። ግን ወደ ኋላ በመሄድ ትክክለኛውን ዝርያ የያዘ መስተዋት ቢመርጡ ይሻላል።