what is the meaning of "POOR_BLR_STEP"?

[warya7]

Hi, I ran a study package using the CohortMethod and Cyclops, but I got this error like below. I think that there is a problem with the fitting steps of PS model, but I don't know exactly what is meaning of this error message and how can I fix this... Please find attached error message and my sessioninfo. If you know how to solve this problem or whatever related to this, please let me know.