Ab-initio job: Detected Nan values in engine.error 31337280 in total. 90 particles with Nan

I got that error launching the ab-initio after many iterations. What could it be due to?

Please can you post

  1. the version of CryoSPARC you are using
  2. the final 30 lines of the event log
  3. the non-default parameters of the failed job
  4. the results of a Check for Corrupt Particles job with the Check for NaN values option