Getting error notification even though there is no error

[qlereboursBS]

Summary

The backup runs every night, and I have an empty notification every night (the arguments are empty), even though there is no error when checking the logs.

Steps to reproduce

Set the environment variable: NOTIFICATION_CUSTOM_SCRIPT=/assets/custom-scripts/backup-error-notifier.sh
and create this backup-error-notifier.sh file:

#!/bin/bash

# Arguments
timestamp=$1
logfile=$2
errorcode=$3
subject=$4
message=$5

# Convert UNIX timestamp to a readable date format
date=$(date -d @$timestamp +"%Y-%m-%d %H:%M:%S") # Linux
#date=$(date -r $timestamp +"%Y-%m-%d %H:%M:%S") # macOS

# Webhook URL
webhook_url="https://discord.com/api/webhooks/..."

# JSON payload for discord
payload=$(cat <<EOF
{
  "username": "Error Notifier",
  "embeds": [
    {
      "title": "$subject",
      "description": "$message",
      "color": 16711680,
      "fields": [
        {
          "name": "Timestamp",
          "value": "$date"
        },
        {
          "name": "Logfile",
          "value": "$logfile"
        },
        {
          "name": "Error Code",
          "value": "$errorcode"
        }
      ]
    }
  ]
}
EOF
)

# Send curl
curl -H "Content-Type: application/json" -d "$payload" "$webhook_url"

What is the expected correct behavior?

As stated in the documentation: This image has capabilities on sending notifications via a handful of services when a backup job fails. This is a global option that cannot be individually set per backup job.
So I expect my script to be executed only if there's an error

Environment

• Image version / tag: 4.1.4
• Host OS: Linux

Possible fixes

I think it may be related to this log:

Found Custom Post Scripts in /assets/custom-scripts/ - Automatically moving them to '/assets/scripts/post/'
Executing post backup custom script : '/assets/scripts/post/backup-error-notifier.sh'

But i don't understand why it moves it to /assets/scripts/post