Graph commit transactions issue on 2021.1.2

[aguinaldoabbj]

Hello all,

I'm getting this error

/opt/conda/lib/python3.9/site-packages/py2neo/data/__init__.py in __db_merge__(self, tx, primary_label, primary_key)
    299         for (pl, pk, labels), nodes in node_dict.items():
    300             if pl is None or pk is None:
--> 301                 raise ValueError("Primary label and primary key are required for MERGE operation")
    302             pq = unwind_merge_nodes_query(map(dict, nodes), (pl, pk), labels)
    303             pq = cypher_join(pq, "RETURN id(_)")

ValueError: Primary label and primary key are required for MERGE operation

when I'm trying to commit a subgraph with 2021.1.2. I'm using the very same piece of code that used to work until version 2021.1.1:

for p in subgraphs:
    tx = graph.begin()
    tx.merge(p)
    graph.commit(tx)

Primary label and key were as always defined when I created a Node Object. Same corde works on 2021.1.1.

[technige]

Can you share a typical value for p?

[technige]

And fixed in release 2021.1.3
https://pypi.org/project/py2neo/2021.1.3/