$ ./rpixen.sh no such file and directory

[premit98]

testrig@raspberrypi:~ $ git clone https://github.com/dornerworks/xen-rpi4-builder.git
Cloning into 'xen-rpi4-builder'...
remote: Enumerating objects: 227, done.
remote: Counting objects: 100% (88/88), done.
remote: Compressing objects: 100% (40/40), done.
remote: Total 227 (delta 58), reused 70 (delta 44), pack-reused 139
Receiving objects: 100% (227/227), 50.47 KiB | 1.44 MiB/s, done.
Resolving deltas: 100% (137/137), done.
testrig@raspberrypi:~ $ ./rpixen.sh
bash: ./rpixen.sh: No such file or directory

**I cloned the repo. and trying to run the coomand but having issue **

[premit98]

make: Entering directory '/home/testrig/xen-rpi4-builder/xen/xen'
x86_64-binfmt-P: Could not open '/lib64/ld-linux-x86-64.so.2': No such file or directory
/bin/sh: 1: arithmetic expression: expecting primary: ""
make -f /home/testrig/xen-rpi4-builder/xen/xen/tools/kconfig/Makefile.kconfig ARCH=arm64 SRCARCH=arm HOSTCC="aarch64-none-linux-gnu-gcc" HOSTCXX="aarch64-none-linux-gnu-g++" rpi4_defconfig
make[1]: Entering directory '/home/testrig/xen-rpi4-builder/xen/xen'
aarch64-none-linux-gnu-gcc -Wp,-MD,tools/kconfig/.conf.o.d -c -o tools/kconfig/conf.o tools/kconfig/conf.c
x86_64-binfmt-P: Could not open '/lib64/ld-linux-x86-64.so.2': No such file or directory
make[1]: *** [tools/kconfig/Makefile.host:124: tools/kconfig/conf.o] Error 255
make[1]: Leaving directory '/home/testrig/xen-rpi4-builder/xen/xen'
make: *** [Makefile:174: rpi4_defconfig] Error 2
make: Leaving directory '/home/testrig/xen-rpi4-builder/xen/xen'
++ fail_handler 77
++ BUILDLINE=77

I was able to perform ./rpixen.sh command bu i am not able to successed I Am having above iisue