Traceback (most recent call last):
  File "/var/www/html/tka-courseware/web/app.py", line 319, in _run_pipeline_job
    from pipeline import run_pipeline
  File "/var/www/html/tka-courseware/ppt_generator/pipeline.py", line 38, in <module>
    from engine.slide_builder   import build_presentation
  File "/var/www/html/tka-courseware/ppt_generator/engine/slide_builder.py", line 49, in <module>
    from engine.text_replacer   import _collect_slots, _set_text
  File "/var/www/html/tka-courseware/ppt_generator/engine/text_replacer.py", line 448, in <module>
    font_pt: float | None = None,
TypeError: unsupported operand type(s) for |: 'type' and 'NoneType'