UploadFiles to Namespace Files does not work correctly

[wrussell1999]

Describe the issue

I have a namespace file called myfile.txt. I was unable to write to it / overwrite it using the UploadFiles task. This was a common occurrence at the HackFrost hackathon that took place last week too.

id: files
namespace: company.team

tasks:
  - id: python_output
    type: io.kestra.plugin.scripts.python.Script
    namespaceFiles:
      enabled: true
    taskRunner:
      type: io.kestra.plugin.core.runner.Process
    outputFiles:
      - "*.txt"
    script: |
      with open("myfile.txt", "a") as f:
        f.write("Hi, this is output from a script 👋")

  - id: save_file
    type: io.kestra.plugin.core.namespace.UploadFiles
    files:
      - "{{ outputs.python_output.outputFiles['myfile.txt'] }}"
    namespace: "{{ flow.namespace }}"

  - id: read_output
    type: io.kestra.plugin.core.log.Log
    message: "{{ read(outputs.python_output.outputFiles['myfile.txt']) }}"

This also didn't work if myfile.txt didn't exist in the first place.

Environment

• Kestra Version: develop