Trying to import the ecoinvent 3.10 cutoff database in brightway2==2.4.6 with the latest bw2io version 0.8.12

if 'ecoinvent 3.10 cutoff' in bw.databases:
    print("Database has already been imported")
else:
    ei = bw.SingleOutputEcospold2Importer(path, 'ecoinvent-3.10-cutoff')
    ei.apply_strategies()
    ei.statistics()
    ei.write_database()

results in

23523 datasets
743409 exchanges
4034 unlinked exchanges
   Type biosphere: 62 unique unlinked exchanges

It is basically the same problem as in Brightway2 and ecoinvent 3.10 — unlinked exchanges though i cannot use the proposed way of the answer, because my university only supplied me with the ecoinvent data, not the username/password for it.

I experienced something similar also with ecoinvent 3.8 dataset, but using the fitting version of bw2io helped to have 0 unlinked exchanges.