I’m trying to install Lucee on a Ubuntu 20.04 ec2 arm64 instance. I am seeing an error when I try to run the installer:

sudo ./lucee-5.3.8.201-linux-x64-installer.run
./lucee-5.3.8.201-linux-x64-installer.run: 1: ELF: not found
./lucee-5.3.8.201-linux-x64-installer.run: 5: Syntax error: "(" unexpected

I have added +x permissions on the .run file - is this an architecture issue with the installer? Do I need a different installer?

I don't think there is an arm version of the installer but i'd like to be proven wrong :)

There isn't one yet. 5.3.9 has some updates to work with ARM with jna 5.10 (that was for M1 native jre support)