MediaFileStorageError

Deployment
1

hi team,

i am facing the below error in my deployed streamlit app. To give some background, in my app user selects filters on UI to filter data and perform some calculations and generate ppt and download the ppt. to give code example:

export_figures_to_ppt(
df_full = full_df, df= filtered_df, df_p1=current_df, df_p2=previous_df, Selected_customer=selected_customers,
kpi_pg=kpi_choice, crs_map_pg=cross_mapping_choice, pop_pg=pop_flag, title_text=None
)

######## deleted full code 

prs = ProductKPIMonthlyMtrxPage(prs, df_full)

# Export presentation to buffer
ppt_buffer = io.BytesIO()
prs.save(ppt_buffer)
# ppt_buffer.seek(0)

out = ppt_buffer.getvalue()
ppt_buffer.close()

if not out:
    raise ValueError("Empty PPT bytes.")

return out

app creates bytes:

ppt_bytes = export_figures_to_ppt(

                    df_full = full_df, df= filtered_df, df_p1=current_df, df_p2=previous_df, Selected_customer=selected_customers,

                    kpi_pg=kpi_choice, crs_map_pg=cross_mapping_choice, pop_pg=pop_flag,  title_text=None

                    )

download ppt

        download_clicked = st.download_button(

            label="📥 Download PPT Report",

            \# data=st.session_state.ppt_bytes,  # \*\*bytes\*\*, not buffer.getvalue() here

            data = io.BytesIO(st.session_state.ppt_bytes),

            file_name=f"{selected_customers}\_VR_Report.pptx",

            mime="application/vnd.openxmlformats-officedocument.presentationml.presentation",

            

            key="download_ppt",

            )

facing the below error in my deployment:

KeyError: ‘3839159ec6ce96c4807bedb06fd3cfe8c0b14109109959171306008b’
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~~~~~~~~~~~~~~~~~^^^^^^^^^
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return self._files_by_id[file_id]
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File “/usr/local/lib/python3.12/site-packages/streamlit/runtime/memory_media_file_storage.py”, line 140, in get_file
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Traceback (most recent call last):
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2025-12-19 05:33:58.975 MediaFileHandler: Missing file 3839159ec6ce96c4807bedb06fd3cfe8c0b14109109959171306008b
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streamlit.runtime.media_file_storage.MediaFileStorageError: Bad filename ‘3839159ec6ce96c4807bedb06fd3cfe8c0b14109109959171306008b’. (No media file with id ‘3839159ec6ce96c4807bedb06fd3cfe8c0b14109109959171306008b’)
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raise MediaFileStorageError(
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File “/usr/local/lib/python3.12/site-packages/streamlit/runtime/memory_media_file_storage.py”, line 142, in get_file
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self._storage.get_file(absolute_path)
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File “/usr/local/lib/python3.12/site-packages/streamlit/web/server/media_file_handler.py”, line 95, in validate_absolute_path
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Traceback (most recent call last):
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The above exception was the direct cause of the following exception:

Plz help me fix this bug.

Thanks