Fix Preview Bug

In case the file preview is erroneous/empty but the file can be processed and it can be downloaded by URL like https://dms.yourdomain.de/api/file/:FILE_ID/data:

Root Cause: unkown. Seems to happen after migration from H2 to PostgreSQL

Fixing proposal

Remove the _thumb and _web files

and let Teedy create new ones by running a (complete) re-processing

cd /var/docs/storage
ll | grep "<YOUR_FILE_ID>"
mv <YOUR_FILE_ID>_thumb <YOUR_FILE_ID>_thumb.bak
mv <YOUR_FILE_ID>_web <YOUR_FILE_ID>_web.bak
 
#or just move all stuff to some sub directory if you plan to re-process the complete file system:
mkdir thumb_web_bak
mv *_thumb *_web thumb_web_bak/
 
#restart your instance to let Teedy recognize that changes due to caching
sudo systemctl restart jetty9.service

Reprocess documents

See Teedy API Scripts / database queries for reprocessing of everything.