Can't add metadata at specific root-folder: "There was an error while saving metadata"

[Popoboxxo]

Description

When setting a meta date at root level, papermerge reports an error "There was an error while saving metadata."

Error:

Logfile:

Logfile

[2021-04-29 19:06:30,041: DEBUG/Beat] beat: Waking up in 29.99 seconds. Internal Server Error: /metadata/node/83 Traceback (most recent call last): File "/usr/local/lib/python3.8/dist-packages/django/core/handlers/exception.py", line 47, in inner response = get_response(request) File "/usr/local/lib/python3.8/dist-packages/django/core/handlers/base.py", line 181, in _get_response response = wrapped_callback(request, *callback_args, **callback_kwargs) File "/usr/local/lib/python3.8/dist-packages/django/contrib/auth/decorators.py", line 21, in _wrapped_view return view_func(request, *args, **kwargs) File "/usr/local/lib/python3.8/dist-packages/papermerge/core/views/metadata.py", line 98, in metadata item.kv.update( File "/usr/local/lib/python3.8/dist-packages/papermerge/core/models/kvstore.py", line 545, in update self.apply_updates( File "/usr/local/lib/python3.8/dist-packages/papermerge/core/models/kvstore.py", line 472, in apply_updates self.propagate( File "/usr/local/lib/python3.8/dist-packages/papermerge/core/models/kvstore.py", line 583, in propagate self.instance.propagate_changes( File "/usr/local/lib/python3.8/dist-packages/papermerge/core/models/node.py", line 379, in propagate_changes node.apply_diffs( File "/usr/local/lib/python3.8/dist-packages/papermerge/core/models/node.py", line 351, in apply_diffs self.apply_diff(diff, attr_updates) File "/usr/local/lib/python3.8/dist-packages/papermerge/core/models/node.py", line 305, in apply_diff self._apply_diff_update(diff, attr_updates) File "/usr/local/lib/python3.8/dist-packages/papermerge/core/models/node.py", line 293, in _apply_diff_update self.kv.apply_updates(updates) File "/usr/local/lib/python3.8/dist-packages/papermerge/core/models/kvstore.py", line 472, in apply_updates self.propagate( File "/usr/local/lib/python3.8/dist-packages/papermerge/core/models/kvstore.py", line 583, in propagate self.instance.propagate_changes( File "/usr/local/lib/python3.8/dist-packages/papermerge/core/models/node.py", line 379, in propagate_changes node.apply_diffs( File "/usr/local/lib/python3.8/dist-packages/papermerge/core/models/node.py", line 351, in apply_diffs self.apply_diff(diff, attr_updates) File "/usr/local/lib/python3.8/dist-packages/papermerge/core/models/node.py", line 305, in apply_diff self._apply_diff_update(diff, attr_updates) File "/usr/local/lib/python3.8/dist-packages/papermerge/core/models/node.py", line 297, in _apply_diff_update raise ValueError( ValueError: Don't know how to replace None (found in Diff(update, [])) [pid: 554|app: 0|req: 3160/3212] 172.20.100.11 () {60 vars in 1344 bytes} [Thu Apr 29 19:06:38 2021] PUT /metadata/node/83 => generated 156057 bytes in 255 msecs (HTTP/1.1 500) 7 headers in 226 bytes (2 switches on core 0)

Actual

Meta-Date "Datum" could not be stored. No metadata type can be configured.

But on another node the setting works without any problems.

Info:

• OS: Windows 10
• Browser: Microsoft Edge Version 90.0.818.49 (Offizielles Build) (64-Bit)
• Database Maria DB 5.5.57
• Papermerge Version 2.0 -> linuxserver/papermerge:v2.0.1-ls35

[ciur]

You probably wanted to add a common metadata field for all documents and folders - a case which I never considered, but it actually make perfect sense. @Popoboxxo, thanks for opening this issue!

[Popoboxxo]

Ah, ok.

of cause, that would be a nice Feature! But in my case I actually tried only to set the/a metadata on a main folder.

(the "faulty"/error-throwing-Folder im core_basetreenode) ([2021-04-30 23:09:07,917: DEBUG/Beat] beat: Waking up in 22.43 seconds. Internal Server Error: /metadata/node/83)

New added Folders/ other, also with documents inside, works smoothly wich new metadata.