ReduceExposure 2D sky subtraction fails for SuNSS exposures

reduceExposure.py /projects/HSC/PFS/Subaru --calib /projects/HSC/PFS/Subaru/CALIB-SuNSS-20211108 --rerun=hassans/sunss/v46472 --doraise --id visit=46472 arm=r -c isr.doFlat=False doSubtractSky2d=True doMeasurePsf=True

reduceExposure.photometerLines INFO: Photometered 85817 lines
Traceback (most recent call last):
  File "/tigress/HSC/PFS/stack/20190925/stack/miniconda3-4.5.12-1172c30/Linux64/drp_stella/w.2022.04/bin/reduceExposure.py", line 25, in <module>
    ReduceExposureTask.parseAndRun()
  File "/tigress/HSC/PFS/stack/20190925/stack/miniconda3-4.5.12-1172c30/Linux64/pipe_base/18.1.0/python/lsst/pipe/base/cmdLineTask.py", line 603, in parseAndRun
    resultList = taskRunner.run(parsedCmd)
  File "/tigress/HSC/PFS/stack/20190925/stack/miniconda3-4.5.12-1172c30/Linux64/pipe_base/18.1.0/python/lsst/pipe/base/cmdLineTask.py", line 221, in run
    resultList = list(mapFunc(self, targetList))
  File "/tigress/HSC/PFS/stack/20190925/stack/miniconda3-4.5.12-1172c30/Linux64/pipe_base/18.1.0/python/lsst/pipe/base/cmdLineTask.py", line 385, in __call__
    result = self.runTask(task, dataRef, kwargs)
  File "/tigress/HSC/PFS/stack/20190925/stack/miniconda3-4.5.12-1172c30/Linux64/pipe_base/18.1.0/python/lsst/pipe/base/cmdLineTask.py", line 447, in runTask
    return task.runDataRef(dataRef, **kwargs)
  File "/tigress/HSC/PFS/stack/20190925/stack/miniconda3-4.5.12-1172c30/Linux64/drp_stella/w.2022.04/python/pfs/drp/stella/reduceExposure.py", line 278, in runDataRef
    linesList, apCorrList)
  File "/tigress/HSC/PFS/stack/20190925/stack/miniconda3-4.5.12-1172c30/Linux64/drp_stella/w.2022.04/python/pfs/drp/stella/subtractSky2d.py", line 158, in run
    image = self.subtractSky(exposure, psf, fiberTrace, detectorMap, pfsConfig, sky2d, apCorr)
  File "/tigress/HSC/PFS/stack/20190925/stack/miniconda3-4.5.12-1172c30/Linux64/drp_stella/w.2022.04/python/pfs/drp/stella/subtractSky2d.py", line 288, in subtractSky
    image = self.makeSkyImage(exposure.getBBox(), psf, fiberTraces, pfsConfig, sky2d, apCorr)
  File "/tigress/HSC/PFS/stack/20190925/stack/miniconda3-4.5.12-1172c30/Linux64/drp_stella/w.2022.04/python/pfs/drp/stella/subtractSky2d.py", line 253, in makeSkyImage
    for wl, flux in zip(model.wavelength, psfFlux):
TypeError: zip argument #2 must support iteration