IndexError after running a Sequence

[mathtimm]

An IndexError appears after running the following sequence on a set of images:

faster_photometry = SequenceParallel(
    [
        blocks.Calibration(darks=darks, bias=bias, flats=flats, shared=True),
        blocks.PointSourceDetection(
            n=12, minor_length=8
        ),  # stars detection for alignment
        blocks.Cutouts(21),  # stars cutoutsb
        blocks.MedianEPSF(),  # building EPSF
        blocks.Gaussian2D(ref),  # modeling EPSF with initial guess
        blocks.ComputeTransformTwirl(ref),  # compute alignment
        blocks.AlignReferenceSources(ref),  # align sources
        blocks.CentroidQuadratic(),  # centroiding
        blocks.AperturePhotometry(),  # aperture photometry
        blocks.AnnulusBackground(),  # annulus background
        blocks.Del("data", "sources", "cutouts"),  # (optional) reduce overhead
        blocks.GetFluxes(
            "fwhm",
            airmass=lambda im: im.header["AIRMASS"],
            dx=lambda im: im.transform.translation[0],
            dy=lambda im: im.transform.translation[1],
        ),
    ],
)

faster_photometry.run(images[30:40])

After trying the debugging recommendations, it appears the error comes from GetFluxes.terminate().

Adding a Trim block removed the overscan regions of the raw images that were preventing the detection of stars and causing the issue.