InMemoryFileManager: Missing file

🎈 Using Streamlit
1

Hello,

I have an st.button(‘Submit’) that when clicked, generates a file and offers a st.download_button()

When “Download” is pressed, download initiates, then page is refreshed with just the “Submit” button visible.

When “Submit” is pressed again, it re-offers the “Download” button, but when it is pressed, it generates an error

InMemoryFileManager: Missing file ee70dc10787eafa72ea16575eaf44be832c7fdd132ea6766e7347647.txt

The only way to download again is to use the browser refresh button.

How to get around this error?

TIA!

2

Hi @jeisma,

Thanks for posting!

Can you share a code snippet so we can reproduce the issue?

Caroline :balloon:

3

Thanks!

import streamlit as st

def main ( ):
    
    if st.button('Submit'):               
        f = 'my data'                
        st.download_button("Download data file", data=f, file_name="mydata.dat")                    
                    
if __name__ == '__main__':
    main()
4

Hi all,
I am also facing similar issue. I am trying to download an html file using st.download_button which works fine on my local but fails on server. Clicking the download button opens a new page on browser which shows “404: Not Found”

with open('abcd.html') as f:
        html = f.read()
        st.download_button(
             label="Download HTML",
             data=html,
             file_name='file-001.html',
             mime='text/html',
         )

and on the server it says

 InMemoryFileManager: Missing file 37ba55f0cf1fb680ef6372c83c2f68cbb8ae77b67e28.html

If anyone has faced this issue or can help resolving it, please share your thoughts.
Thanks

5

Hello, has anyone found a root cause for this? We are facing a similar issue.

        with st.container():
                st.subheader(title)
                st.download_button(
                    "Download CSV",
                    convert_df(dataframe),
                    str(title) + ".csv",
                    "text/csv",
                    key=f'{key}-download-csv'
                )
6

Your code works for me after defining the undefined names. Maybe there is an issue with the way you are defining them.

1 Like
7

It is intermittent for us, and the first time download always succeeds, but some times when we come back to the page, and click download again, it gives 404.

8

Where is the app deployed? Do you have an example we can reproduce?