Statistics  failed.

/net/cci-nas-00/data/ceres_data/6qcm_4508/01_2025/6qcm_4508.cif /net/cci-nas-00/data/ceres_data/6qcm_4508/01_2025/6qcm_4508.map 4.21
Traceback (most recent call last):
  File "/net/marbles/raid1/dorothee/rerefine/cryoem/rerefine_script.py", line 440, in get_statistics
    assert checked.map_data().as_1d().count(0) != checked.map_data().size() # need data
AssertionError