Your sequence is aborting because PHD2 is not able to settle below your defined tolerance of 0.5px. You will either need to understand why or increase the settling tolerance on the auto guider tab.
Also, not related to your question, but a couple tips on AF:
- Use 9 steps until you are familiar with the idiosyncrasies of AF on your rig
- Use 2x2 binning on a KAF-8300