Hello KoboToolbox Community & Support Team,
I am experiencing a highly specific issue where a small batch of submissions successfully exported the raw image filenames, but the corresponding Media URL columns are completely blank.
This is occurring on the eu.kobotoolbox.org server, affecting exactly 7 records out of 400 total submissions.
Symptoms:
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In the exported XLSX/CSV, the media question column displays the raw filename perfectly (e.g.,
1780644986664.jpg). -
The generated Media URL column is entirely blank for only these 7 records. The other 393 records in the same dataset generated their full
https://eu.kobotoolbox.org/api/v2/...attachment hyperlinks flawlessly. -
The images are not missing from the server. When checking the DATA > Gallery tab on the web dashboard, the photos for these 7 specific submissions are fully visible and open properly.
Context & Troubleshooting Already Completed:
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Timeframe: The 7 affected records were all submitted at a very similar time with the other records.
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Export Settings: “Include media URLs” is checked in the Advanced Export settings.
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No Form Changes: The form has not been redeployed or modified.
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Fresh Exports: Previous exports were completely deleted from the cache queue before running brand new XLS and CSV downloads, but the problem persists.
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No Web Edits / Failed Manual Force: These records were not edited originally. However, as a troubleshooting step, I tried opening one of the affected records and resubmitting it without changes to force a database re-index. After deleting the old export cache and running a fresh download, the URL column still remained completely blank.
