cannot import detectorMapQA task

--------------------------------------------------------------------------- TypeError Traceback (most recent call last) Input In [2], in <cell line: 1>() ----> 1 from pfs.drp.qa.detectorMapQa import DetectorMapQaTask as BaseTask File ~/devel/drp_qa/python/pfs/drp/qa/detectorMapQa.py:27, in <module>  25 from lsst.pipe.base.connections import InputQuantizedConnection, OutputQuantizedConnection  26 from pfs.drp.stella import ArcLineSet, DetectorMap, PfsArm ---> 27 from pfs.drp.qa.utils import helpers  28 from pfs.drp.qa.utils import plotting  30 from .storageClasses import MultipagePdfFigure File ~/devel/drp_qa/python/pfs/drp/qa/utils/helpers.py:244, in <module>  236 arc_data['targetType'] = arc_data.targetType.astype('category')  238 return arc_data  241 def getFitStats(  242 arcLines: ArcLineSet,  243 detectorMap: DetectorMap, --> 244 selection: np.ndarray[bool],  245 numParams: int = 0):  246 """Gets output from calculateFitStatistics  247  248  Parameters  (...)  262  The fit statistics.  263  """  264 isTrace = np.array(arcLines.description == "Trace") TypeError: 'type' object is not subscriptable