FoxFSArchiver pack problem

[Jimmermania 36]

Hi guys, i'm trying to pack my source files through FoxFSArchiver but i have some problems.
This is my folder structure:

When i click make_xml.bat it creates successfully the .xml but some files are missing from this .xml.
Any ideas why this is happening?
My make_xml.py:

import os
import subprocess

xml_files = []

for file in os.listdir("make_xml"):
    if file.endswith(".xml"):
        xml_files.append(os.path.join("make_xml", file))

exe_path = os.path.join("bin", "FoxFSArchiver.exe")

print("[DEBUG] Found XML files:")
for f in xml_files:
    print(" -", f)

cmd = [exe_path] + xml_files

print("\n[DEBUG] Running:")
print(" ".join(cmd))

result = subprocess.run(cmd, shell=False)

print("\n[DEBUG] Return code:", result.returncode)

print("XML Files were processed")