Error 203

Getting this error when trying to start the service:
Job for undervolt.service failed because the control process exited with error code.
See "systemctl status undervolt.service" and "journalctl -xeu undervolt.service" for details.

journal output:
░░ Subject: A start job for unit undervolt.service has begun execution
░░ Defined-By: systemd
░░ Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
░░
░░ A start job for unit undervolt.service has begun execution.
░░
░░ The job identifier is 4534.
May 23 13:26:02 astrorya systemd[1]: undervolt.service: Main process exited, code=exited, status=203/EXEC
░░ Subject: Unit process exited
░░ Defined-By: systemd
░░ Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
░░
░░ An ExecStart= process belonging to unit undervolt.service has exited.
░░
░░ The process' exit code is 'exited' and its exit status is 203.
May 23 13:26:02 astrorya systemd[1]: undervolt.service: Failed with result 'exit-code'.
░░ Subject: Unit failed
░░ Defined-By: systemd
░░ Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
░░
░░ The unit undervolt.service has entered the 'failed' state with result 'exit-code'.
May 23 13:26:02 astrorya systemd[1]: Failed to start undervolt.
░░ Subject: A start job for unit undervolt.service has failed
░░ Defined-By: systemd
░░ Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
░░
░░ A start job for unit undervolt.service has finished with a failure.
░░
░░ The job identifier is 4534 and the job result is failed.
ESCOD

Unsure what's going on here, not sure where to find the issue with error code 203. This undervolt tool has worked for me before on this operating system and laptop. I have an i7-9750h and I run EndeavourOS.