koha-2.3.0 bug-1

ERROR 1062 at line 1: Duplicate entry 'localhost-root' for key 1
256ERROR 1062 at line 1: Duplicate entry '%-Koha-root' for key 1


read_config_file(/etc/koha.conf.tmp) returned undef at /usr/local/koha/intranet/ modules/C4/Context.pm line 195.
Can't call method "config" on unblessed reference at /usr/local/koha/intranet/mo dules/C4/Context.pm line 488.
Problem updating database...