fix: fix issue with conflicting set flags in Bash script

[ozrg]

Context

In the Bash script, set -e +u was used to handle errors and undefined variables, but the combination of these flags caused conflicts and unexpected behavior.

Problem

The flags set -e and set -u were not functioning as intended when used together. set -e stops script execution on any error, while set -u triggers an error for undefined variables. This combination led to inconsistent execution, as the script logic was affected by these conflicts.

Solution

I replaced set -e +u with set -eu, which properly handles both error situations and undefined variables without causing conflicts, ensuring that the script runs as expected.