I cannot save a new document with a file attached to an attach field (custom doctype)

Frappe Framework App Development
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1

Dears,
I am trying to upload a file to a custom doctype (with a field Attach). I attach my file before saving the doc, from my device:

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When I save the new document with an attachment, I get this error message (it means: "file /private/files/MyFile.txt does not exist):
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For debug, I looked into the JS console where I found this error:

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image734×98 5.38 KB

I also had a look into the network history where I found a response “DoesNotExistError” to the request to /api/method/upload_file

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image1019×513 51.7 KB

But, once the document is saved, when I change the attached file or reload it from the attach field

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Then, the file is correctly uploaded:

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image928×258 16.2 KB

Do you have any idea where this error comes from ? Is it a bug ?

Some context:

  • frappe version: 13.12.1
  • I am the Administrator, I have all the permissions.
  • The folder /private/files is owned by the user frappe on the system.

Regards

2

Dears,
I am still working on this issue. I keep it updated on Github: File are not correctly uploaded as attachment when saving a doctype with a field attach · Issue #14422 · frappe/frappe · GitHub

Any help would be really welcomed !!!

Regards