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One way to fix this is to simply restart from a checkpoint, sometimes it converges. Another way is to restart the run with a smaller initial step size. We use finite_difference_h 0.01 as a default, try decreasing to finite_difference_h 0.001.
Geometry failed to minimize
Another possible error is that the geometry fails to minimize. This could be a one-off issue, where it fails once but gets resubmitted and succeeds that time. However, if it is consistently failing to minimize, it may be an issue with the parameters. You can visualize the parameter changes using this script to diagnose the issue.
Restarting from a checkpoint
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