Trying to install 9.1 UTM on old server but keep getting bug error

Hi all,

Im try to install UTM 9.1 on an a server that we had sitting around unused. It is setup with RAId 1 and RAID 5. Im trying to install this on the RAID 5 partition and for some reason when I run the install I get the following: Bug at helper.c:1752

Any ideas? Thanks!