Attachments gone since I upgraded from 6.2 to 6.4


I recently upgraded a tryton from 6.2 to 6.4:

  • create a new venv with version 6.4.* instead of 6.2.* on the server
  • duplicate the database
  • trytond-admin -c trytond.conf -d thenewdb --all -vv
  • install the 6.4 client on the client pc

All went well, except that now I can’t access the attachments. Tryton still shows that there is an attachment to the documents that I’m seeing, but when I click on the name of the attachment to see it, it errors out:

ERROR:tryton.common.common:  File "/home/hobbes/devel/tryton/tryton-6.4/lib/python3.11/site-packages/tryton/gui/window/", line 152, in activate
  File "/home/hobbes/devel/tryton/tryton-6.4/lib/python3.11/site-packages/tryton/gui/window/", line 100, in open_data
    filepath = file_write(attachment['name'], value['data'])
  File "/home/hobbes/devel/tryton/tryton-6.4/lib/python3.11/site-packages/tryton/common/", line 523, in file_write

TypeError: a bytes-like object is required, not 'NoneType'

Did I miss something in the update, or is this a bug ?


Have you changed/removed/added path in database section?

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wooot, I didn’t know about that file storage :slight_smile:

I didn’t change anything in the config, but as the database name has changed, the data was stored in the original subdir of ~/db

I copied everything, and now I have my attachments. Thanks

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