使用无人驾驶AI最新版本（即1.4.2）时，我们面临以下错误- 我们使用了与1.3版相同的数据，效果很好。
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2019-01-07 12:36:18,275 C: D:172.8GB M:117.0GB 46209 ERROR : Experiment hocirika FAILED with 'NoneType' object has no attribute 'max_workers'
2019-01-07 12:36:18,280 C: D:172.8GB M:117.0GB 46209 ERROR : ================================================================================
Traceback (most recent call last):
File "h2oaicore/systemutils.py", line 2633, in h2oaicore.systemutils.traced_func
File "h2oaicore/auto_dl_support.py", line 6254, in h2oaicore.auto_dl_support.pop_mutate
AttributeError: 'NoneType' object has no attribute 'max_workers'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "h2oaicore/systemutils.py", line 2912, in h2oaicore.systemutils.find_raise_exception
File "h2oaicore/systemutils.py", line 2633, in h2oaicore.systemutils.traced_func
File "h2oaicore/auto_dl_support.py", line 6254, in h2oaicore.auto_dl_support.pop_mutate
AttributeError: 'NoneType' object has no attribute 'max_workers'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "h2oaicore/auto_dl.py", line 2583, in h2oaicore.auto_dl.do_auto_dl
File "h2oaicore/auto_dl_support.py", line 6066, in suggest_pipeline
File "h2oaicore/systemutils.py", line 2461, in h2oaicore.systemutils.trace.f
File "h2oaicore/systemutils.py", line 2640, in h2oaicore.systemutils.traced_func
File "h2oaicore/systemutils.py", line 2914, in h2oaicore.systemutils.find_raise_exception
File "h2oaicore/systemutils.py", line 2633, in h2oaicore.systemutils.traced_func
File "h2oaicore/auto_dl_support.py", line 6254, in h2oaicore.auto_dl_support.pop_mutate
Exception: 'NoneType' object has no attribute 'max_workers'