APL with issue

demonhunter="Demon_Hunter_Vengeance_T19P"
spec=vengeance
level=110
race=night_elf
timeofday=night
role=tank
position=front
talents=1222132
artifact=60:0:0:0:0:1096:1:1097:1:1098:1:1099:4:1100:4:1101:4:1228:1:1229:4:1230:4:1231:4:1232:4:1233:4:1234:4:1235:1:1236:1:1328:1:1363:1:1434:1:1497:4:1498:1:1499:1:1500:1:1631:1

# Default consumables
potion=unbending_potion
flask=seventh_demon
food=lavish_suramar_feast
augmentation=defiled

# This default action priority list is automatically created based on your character.
# It is a attempt to provide you with a action list that is both simple and practicable,
# while resulting in a meaningful and good simulation. It may not result in the absolutely highest possible dps.
# Feel free to edit, adapt and improve it to your own needs.
# SimulationCraft is always looking for updates and improvements to the default action lists.

# Executed before combat begins. Accepts non-harmful actions only.
actions.precombat=flask
actions.precombat+=/augmentation
actions.precombat+=/food
# Snapshot raid buffed stats before combat begins and pre-potting is done.
actions.precombat+=/snapshot_stats
actions.precombat+=/potion


# Executed every time the actor is available.
# Defensives/Brand
actions=auto_attack
actions+=/metamorphosis
actions+=/consume_magic,if=pain<=60
actions+=/use_item,slot=trinket1
actions+=/use_item,slot=trinket2
actions+=/call_action_list,name=brand
actions+=/call_action_list,name=defensives


# Normal Rotation
actions+=/infernal_strike
actions+=/spirit_bomb,if=debuff.frailty.down&!talent.fracture.enabled
actions+=/spirit_bomb,if=lesser_soul_fragments>=4
actions+=/immolation_aura,if=pain<=80
actions+=/fel_eruption
actions+=/soul_carver,if=lesser_soul_fragments<=4
actions+=/felblade,if=pain<=70
actions+=/call_action_list,name=spender

actions+=/sigil_of_flame
actions+=/shear

# Pain Spenders
actions.spender+=/demon_spikes,if=talent.razor_spikes.enabled&pain>=80
actions.spender+=/soul_cleave,if=pain>=60&buff.demon_spikes.up&!talent.fracture.enabled
actions.spender+=/soul_cleave,if=pain>=80&!talent.fracture.enabled
actions.spender+=/fracture,if=buff.demon_spikes.up&talent.razor_spikes.enabled
actions.spender+=/fracture,if=pain>=50&lesser_soul_fragments<=4

# Defensives
actions.defensives+=/empower_wards,if=debuff.casting.up
actions.defensives+=/demonic_infusion,if=cooldown.demon_spikes.charges=0&pain<=60
actions.defensives+=/demon_spikes,if=charges<=2&!talent.razor_spikes.enabled

# Fiery Brand rotation
actions.brand+=/sigil_of_flame,if=cooldown.fiery_brand.remains=0
actions.brand+=/infernal_strike,if=cooldown.fiery_brand.remains=0
actions.brand+=/fiery_brand
actions.brand+=/immolation_aura,if=dot.fiery_brand.ticking
actions.brand+=/infernal_strike,if=dot.fiery_brand.ticking
actions.brand+=/sigil_of_flame,if=dot.fiery_brand.ticking
actions.brand+=/soul_carver,if=dot.fiery_brand.ticking
actions.brand+=/fel_eruption,if=dot.fiery_brand.ticking
actions.brand+=/fel_devastation,if=dot.fiery_brand.ticking



head=lunarwrath_headgear,id=147033,bonus_id=3562/1502/3336
neck=locket_of_splintered_souls,id=147014,bonus_id=1512/3563,enchant=mark_of_the_claw
shoulders=demonbane_shoulderpads,id=147132,bonus_id=3562/1512/3337
back=cloak_of_stifling_brimstone,id=146984,bonus_id=3563/1512/3528,enchant=200agi
chest=demonbane_harness,id=147127,bonus_id=3562/1507/3336
wrists=bracers_of_impossible_choices,id=140889,bonus_id=3518/1808/1507/3336
hands=gloves_of_second_sight,id=138377,bonus_id=3518/1502/3528
waist=waistclasp_of_unethical_power,id=144405,bonus_id=3445/1517/3337
legs=legwraps_of_second_sight,id=138379,bonus_id=3518/1502/3528
feet=glacier_walkers,id=147029,bonus_id=1512/3563
finger1=seal_of_darkshire_nobility,id=142171,bonus_id=3509/1527/3337,enchant=200mastery
finger2=scaled_band_of_servitude,id=147020,bonus_id=3563/1512/3528,enchant=200mastery
trinket1=vial_of_ceaseless_toxins,id=147011,bonus_id=3561/1482/3528
trinket2=darkmoon_deck_immortality,id=128711,bonus_id=689/601/679
main_hand=twinblades_of_the_deceiver,id=127829,bonus_id=719,gem_id=140824/141273/141255/0,relic_id=3516:1487:3528/1824:1517:3528/1824:1567:3337/0
off_hand=twinblades_of_the_deceiver,id=127830

# Gear Summary
# gear_ilvl=921.44
# gear_agility=25872
# gear_stamina=40269
# gear_crit_rating=3772
# gear_haste_rating=6685
# gear_mastery_rating=12327
# gear_versatility_rating=4121
# gear_armor=2594
# set_bonus=tier19_2pc=1
# set_bonus=tier20_2pc=1