mz_db -Q ::File.History <checksum> --> TypeError: unsupported operand type(s) for +: 'int' and 'NoneType'

[d004367@rosetta-bigviz04 MUST]$ mz_db -Q ::File.History DDB435D859C69BC9F4938754AF00D3518EA66F13994EA56064AE2980EC1F5BDC
### 
### ====================================================================
### MOSAIC (v1.0) - 2023-11-14T15:51:55
### 
Traceback (most recent call last):
  File "/softs/mosaic/1.0/ref/bin/mz_db", line 339, in 
    main_function(args, mzlog)
  File "/softs/mosaic/1.0/ref/bin/mz_db", line 211, in main_function
    results = run_query([(args.query, args.params, None), ],
  File "/softs/mosaic/1.0/ref/lib/python3.10/site-packages/MOSAIC/backbone/services/api/query.py", line 579, in run_query
    r = qry_func[0](mode, dbserver, qry_args, qual=qry_qual)
  File "/softs/mosaic/1.0/ref/lib/python3.10/site-packages/MOSAIC/backbone/services/api/query.py", line 339, in q_file_history
    return q_query.file_history(*args, **kwargs)
  File "/softs/mosaic/1.0/ref/lib/python3.10/site-packages/MOSAIC/backbone/services/qualification/query.py", line 578, in file_history
    g = graph(ds, r_name, catalog=False)
  File "/softs/mosaic/1.0/ref/lib/python3.10/site-packages/MOSAIC/backbone/services/qualification/facade.py", line 619, in graph
    depth = 1 + depth
TypeError: unsupported operand type(s) for +: 'int' and 'NoneType'