Ab-init job:Detected NaN values in engine.compute_error. 17539200 NaNs in total, 300 particles with NaNs

The particle stack is from EMPIAR-10278. All the parameters of Ab-initio job are default. The Check for Corrupt Particles job with the Check for NaN values option ran successfully. And can you explain that why my Ab-initio job fail? Thanks.(the version:v4.6.0)