Issue with structured mode

[dsourajit]

I'm trying to open a sorted SEG-Y volume. The headers appear to be all right, but segyio can't seem to open the file in structured mode.
What other issues with the file could be causing this?

>>> import numpy as np
>>> import segyio
>>> m=segyio.open("file.sgy",strict=False)
>>> len(np.unique(m.attributes(segyio.TraceField.INLINE_3D)[:]))*len(np.unique(m.attributes(segyio.TraceField.CROSSLINE_3D)[:]))
4506633
>>> m.tracecount
4506633
>>> m=segyio.open("file.sgy")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/anaconda3/envs/base/lib/python3.12/site-packages/segyio/open.py", line 192, in open
    return infer_geometry(f, metrics, iline, xline, strict)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/anaconda3/envs/base/lib/python3.12/site-packages/segyio/open.py", line 7, in infer_geometry
    cube_metrics = f.xfd.cube_metrics(iline, xline)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
RuntimeError: unable to find sorting.Check iline, (189) and xline (193) in case you are sure the file is a 3D sorted volume