Convert2to3 error

[Gonza10V]

I got a document in SBOL2 I tried to convert it to SBOL3 using the function convert2to3 and it returned me an error.
The 3.0 is a valid displayid.
Here is the error:

ValueError Traceback (most recent call last)
Cell In[7], line 1
----> 1 doc3 = convert2to3(doc2)

File ~/Documents/GitHub/SBOL-utilities/sbol_utilities/conversion.py:105, in convert2to3(sbol2_doc, namespaces)
103 rdf_xml = convert_identities2to3(rdf_xml)
104 doc = sbol3.Document()
--> 105 doc.read_string(rdf_xml, sbol3.RDF_XML)
107 # TODO: remove workaround after conversion errors fixed in SynBioDex/sboljs3#14
108 # add in the missing namespace fields where possible, defaulting otherwise
109 # TODO: add check for non-TopLevel? See SynBioDex/pySBOL3#295
110 needs_namespace = {o for o in doc.objects if o.namespace is None}

File ~/opt/anaconda3/envs/LOICA/lib/python3.9/site-packages/sbol3/document.py:334, in Document.read_string(self, data, file_format)
332 graph = rdflib.Graph()
333 graph.parse(data=data, format=file_format)
--> 334 return self._parse_graph(graph)

File ~/opt/anaconda3/envs/LOICA/lib/python3.9/site-packages/sbol3/document.py:247, in Document._parse_graph(self, graph)
246 def _parse_graph(self, graph) -> None:
--> 247 objects = self._parse_objects(graph)
248 child_objects = self._parse_attributes(objects, graph)
249 self._clean_up_singletons(objects)
...
58 msg += ' A displayId MUST be composed of only alphanumeric'
59 msg += ' or underscore characters and MUST NOT begin with a digit.'
---> 60 raise ValueError(msg)

ValueError: "3.0" is not a valid displayId. A displayId MUST be composed of only alphanumeric or underscore characters and MUST NOT begin with a digit.

[jakebeal]

1. Is the document valid before conversion?
2. Can you attach a copy of the document?

[jakebeal]

Given the lack of response, I'm going to close this as likely no longer relevant. If you want to pursue it further, please answer the questions above and reopen.