"AttributeError: 'Parallel' object has no attribute '__process_manager" on GTDBTk v2.4.0

[Thermosynechococcus]

I have installed GTDBTk ver 2.4.0. I am trying to classify MAGs by --classify_wf.
I have some problems and errors like this:

AttributeError: 'Parallel' object has no attribute '__process_manager'

Could anyone help me to solve it?
I have attached my command and the output.

gtdbtk classify_wf --genome_dir /Volumes/SSD/gtdbtk_input --out_dir OUT_DIR --skip_ani_screen
[2025-01-06 10:00:54] INFO: GTDB-Tk v2.4.0
[2025-01-06 10:00:54] INFO: gtdbtk classify_wf --genome_dir /Volumes/SSD/gtdbtk_input --out_dir OUT_DIR --skip_ani_screen
[2025-01-06 10:00:54] INFO: Using GTDB-Tk reference data version r220: /Volumes/SSD/gtdbtk_db
[2025-01-06 10:00:55] INFO: Identifying markers in 2 genomes with 1 threads.
[2025-01-06 10:00:55] TASK: Running Prodigal V2.6.3 to identify genes.
==> Processed 0/2 genomes (0%) | | [?geTraceback (most recent call last):
File "", line 1, in
File "/Users/XXX/opt/anaconda3/envs/gtdbtk-2.4.0/lib/python3.12/multiprocessing/spawn.py", line 122, in spawn_main
exitcode = _main(fd, parent_sentinel)
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Users/XXX/opt/anaconda3/envs/gtdbtk-2.4.0/lib/python3.12/multiprocessing/spawn.py", line 132, in _main
self = reduction.pickle.load(from_parent)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'Parallel' object has no attribute '__process_manager'
Process Process-3:
[2025-01-06 10:02:51] ERROR: Controlled exit resulting from interrupt signal.
Process Process-2:
Traceback (most recent call last):

[Thermosynechococcus]

The same error had been reported by
#366 (comment)

[pchaumeil]

Hello,
How did you install Tk? Which OS are you using? GTDB-Tk will not work on MacOS due to a third party dependency ( pplacer)

[Thermosynechococcus]

Hi, thank you for reply.
my information is following,
Installation : conda
( I also tried insulation of Tk ver 2.1.1 using mamba, it reported the same error)
OS : Ventura 13.0.1
Model Name: MacBook Pro
Model Identifier: MacBookPro16,3
Processor Name: Quad-Core Intel Core i5

[pchaumeil]

Hello,
As mentioned above, unfortunately GTDB-Tk will not on Ventura. One of the dependency,pplacer, is not supported in this OS. For this reason, We haven't tested GTDB-Tk on MacOS.