Ubuntu / LibreOffice 7.3.0.3 / ElementTree.ParseError: no element found

[johnjohndoe]

Environment

• Ubuntu 20.04.3
• LibreOffice 7.3.0.3
• Extension 7.3

Reproducer steps

1. Open https://raw.githubusercontent.com/blokhin/genealogical-trees/master/data/tsars.ged with LibreOffice

Actual result

• Pop-up appears: General input/output error.
• Console output:

  failed at node 1429[0]
  dot: maze.c:311: chkSgraph: Assertion `np->cells[0]' failed.
  Traceback (most recent call last):
  File "/home/john/.config/libreoffice/4/user/uno_packages/cache/uno_packages/lu429500spycr.tmp_/gedcom-7.3.oxt/importer.py", line 125, in filter
  buf = self.__to_svg(path)
  File "/home/john/.config/libreoffice/4/user/uno_packages/cache/uno_packages/lu429500spycr.tmp_/gedcom-7.3.oxt/importer.py", line 103, in __to_svg
  inlineize.inlineize(noinline, inline)
  File "/home/john/.config/libreoffice/4/user/uno_packages/cache/uno_packages/lu429500spycr.tmp_/gedcom-7.3.oxt/inlineize.py", line 25, in inlineize
  tree.parse(from_path)
  File "/usr/lib/python3.8/xml/etree/ElementTree.py", line 595, in parse
  self._root = parser._parse_whole(source)
  xml.etree.ElementTree.ParseError: no element found: line 1, column 0

Expected behavior

• Some nice rendering.

[vmiklos]

Running that input from the cmdline also fails:

$ ./ged2dot.py --input workdir/gh201/tsars.ged --output test.dot
Traceback (most recent call last):
  File "./ged2dot.py", line 658, in <module>
    main()
  File "./ged2dot.py", line 654, in main
    convert(config.get_dict())
  File "./ged2dot.py", line 620, in convert
    root_family = graph_find(graph, config["rootfamily"])
  File "./ged2dot.py", line 117, in graph_find
    assert len(results) == 1
AssertionError

Let me see what can be done with that.

[vmiklos]

Getting back to this, the actual .ged opening in LO works fine for me. What version of graphviz do you have?

failed at node 1429[0] dot: maze.c:311: chkSgraph: Assertion `np->cells[0]' failed.

This sounds like the underlying graphviz crashes for you, but not here.

First I get the popup to choose the root family:

and if I accept the defaults, I get:

Which looks reasonable.

$ dot -V
dot - graphviz version 2.40.1 (20161225.0304)

is what I have, what about you?

[johnjohndoe]

dot - graphviz version 2.43.0 (0)

[vmiklos]

Hm, so either I feed different input to 'dot' or the newer 'dot' has a regression that my old 'dot' doesn't have.

Could you please run:

dot -Tsvg /path/to/in.txt

with this input: in.txt and see if that still crashes? Thanks.

[johnjohndoe]

Here is the tail of the shell output:

Warning: No such file or directory while opening /home/vmiklos/git/libreoffice/lo73/opt/UserInstallation/user/uno_packages/cache/uno_packages/lu29209t3uuuw.tmp_/gedcom-v7.3-5-gea76fe8.oxt/marriage.svg
Error: No or improper image file="/home/vmiklos/git/libreoffice/lo73/opt/UserInstallation/user/uno_packages/cache/uno_packages/lu29209t3uuuw.tmp_/gedcom-v7.3-5-gea76fe8.oxt/marriage.svg"
in label of node 43
Warning: No such file or directory while opening /home/vmiklos/git/libreoffice/lo73/opt/UserInstallation/user/uno_packages/cache/uno_packages/lu29209t3uuuw.tmp_/gedcom-v7.3-5-gea76fe8.oxt/marriage.svg
Error: No or improper image file="/home/vmiklos/git/libreoffice/lo73/opt/UserInstallation/user/uno_packages/cache/uno_packages/lu29209t3uuuw.tmp_/gedcom-v7.3-5-gea76fe8.oxt/marriage.svg"
in label of node 54
failed at node 1429[0]
dot: maze.c:311: chkSgraph: Assertion `np->cells[0]' failed.
[1]    146025 abort (core dumped)  dot -Tsvg in.txt

[vmiklos]

Really strange. Here is what I tried:

1) https://gitlab.com/graphviz/graphviz seems to not contain a tag named "2.43.0" 2) https://packages.ubuntu.com/search?keywords=graphviz&searchon=names&suite=focal&section=all seems to ship 2.42.2 3) I built 2.42.2 from git, but still can't reproduce your crash, even looked at Makefiles and seems nobody specified -DNDEBUG to disable assert() calls.

I wonder if it makes sense to continue tracking down your bug or just close this and you are free to re-report this to graphviz?

In general, I would like to see them fix the root cause, rather than work something around in ged2dot.

[johnjohndoe]

Thanks for the effort! I would also think that you should not invest more time. I quickly checked that dot is symlinked to /usr/sbin/libgvc6-config-update if this helps anyhow. I can't say where version 2.43.0 comes from. It might originate from some PPA I have added. No idea how to track this down.