
Application has crashed: C++ exception
[string "lib/units/equipment/sentry_gun/sentrygundamag..."]:188: attempt to perform arithmetic on global 'damage' (a nil value)
SCRIPT STACK
give_impact_damage() lib/units/weapons/raycastweaponbase.lua:2953
on_collision() lib/units/weapons/raycastweaponbase.lua:2830
_fire_raycast() @mods/WeaponLib/hooks/lib/units/weapons/newraycastweaponbase.raycast.lua:134
fire() @mods/WeaponLib/hooks/lib/units/weapons/raycastweaponbase.lua:132
fire() @mods/BeardLib/Hooks/Fixes.lua:367
fire() lib/units/weapons/newraycastweaponbase.lua:2079
original() lib/units/weapons/raycastweaponbase.lua:480
trigger_held() @mods/base/req/core/Hooks.lua:264
trigger_held() lib/units/weapons/newraycastweaponbase.lua:2064
original() @mods/WeaponLib/hooks/lib/units/beings/player/states/playerstandard.lua:478
_check_action_primary_attack() @mods/base/req/core/Hooks.lua:264
_update_check_actions() lib/units/beings/player/states/playercarry.lua:193
update() lib/units/beings/player/states/playerstandard.lua:446
update() lib/units/beings/player/states/playercarry.lua:86
original() lib/units/beings/player/playermovement.lua:279
@mods/base/req/core/Hooks.lua:264
Callstack:
payday2_win32_release (???) ???
payday2_win32_release (???) ???
payday2_win32_release (???) ???
payday2_win32_release (???) ???
payday2_win32_release (???) ???
KERNEL32 (???) BaseThreadInitThunk
ntdll (???) RtlGetAppContainerNamedObjectPath
ntdll (???) RtlGetAppContainerNamedObjectPath
SAME CRASH, BUT FROM A DIFFERENT USER WITHOUT A WEAPONLIB
Application has crashed: C++ exception
[string "lib/units/equipment/sentry_gun/sentrygundamag..."]:188: attempt to perform arithmetic on global 'damage' (a nil value)
SCRIPT STACK
give_impact_damage() lib/units/weapons/raycastweaponbase.lua:2953
on_collision() lib/units/weapons/raycastweaponbase.lua:2830
_fire_raycast() lib/units/weapons/newnpcraycastweaponbase.lua:571
fire() lib/units/weapons/raycastweaponbase.lua:574
fire() u/mods/PAYDAY-2-BeardLib-master/Hooks/Fixes.lua:367
fire_original() lib/units/weapons/newraycastweaponbase.lua:2079
fire() u/mods/VanillaHUD Plus/lua/BurstFire.lua:89
trigger_held() lib/units/weapons/newnpcraycastweaponbase.lua:212
kpr_original_copactionshoot_update() lib/units/enemies/cop/actions/upper_body/copactionshoot.lua:431
origfunc() u/mods/Keepers/lua/copactionshoot.lua:13
update() u/mods/The Fixes/copactionshoot.lua:10
_upd_actions() lib/units/enemies/cop/copmovement.lua:769
update() lib/units/enemies/cop/copmovement.lua:732
lib/units/player_team/teamaimovement.lua:450
Callstack:
payday2_win32_release (???) ???
payday2_win32_release (???) ???
payday2_win32_release (???) ???
payday2_win32_release (???) ???
payday2_win32_release (???) ???
KERNEL32 (???) BaseThreadInitThunk
ntdll (???) RtlGetAppContainerNamedObjectPath
ntdll (???) RtlGetAppContainerNamedObjectPath

I believe I'm getting this crash as well. Each time was with an HVT build when trying to take down Boiling Point Turrets.
Application has crashed: C++ exception
[string "lib/units/equipment/sentry_gun/sentrygundamag..."]:188: attempt to perform arithmetic on global 'damage' (a nil value)
SCRIPT STACK
give_impact_damage() lib/units/weapons/raycastweaponbase.lua:2953
on_collision() lib/units/weapons/raycastweaponbase.lua:2830
_fire_raycast() lib/units/weapons/raycastweaponbase.lua:958
fire() lib/units/weapons/raycastweaponbase.lua:574
fire() @mods/BeardLib/Hooks/Fixes.lua:367
fire() lib/units/weapons/newraycastweaponbase.lua:2079
original() lib/units/weapons/raycastweaponbase.lua:480
trigger_held() @mods/base/req/core/Hooks.lua:264
trigger_held() lib/units/weapons/newraycastweaponbase.lua:2064
Run() lib/units/beings/player/states/playerstandard.lua:5161
_check_action_primary_attack() @mods/PocoHud3/poco/../poco/Hud3.lua:2814
_update_check_actions() lib/units/beings/player/states/playerstandard.lua:1017
_update_check_actions() @mods/use-ability-while-shooting-or-driving/playerstandard.lua:24
original() lib/units/beings/player/states/playerstandard.lua:446
saw_original_playerstandard_update() @mods/base/req/core/Hooks.lua:264
update() @mods/Saw Helper/lua/playerstandard.lua:39
original() lib/units/beings/player/playermovement.lua:279
@mods/base/req/core/Hooks.lua:264
Callstack:
payday2_win32_release (???) ???
payday2_win32_release (???) ???
payday2_win32_release (???) ???
payday2_win32_release (???) ???
payday2_win32_release (???) ???
KERNEL32 (???) BaseThreadInitThunk
ntdll (???) RtlGetAppContainerNamedObjectPath
ntdll (???) RtlGetAppContainerNamedObjectPath

Same happening to me. As soon as I shoot HVT Turret a single time - crash.
Application has crashed: C++ exception
[string "lib/units/equipment/sentry_gun/sentrygundamag..."]:188: attempt to perform arithmetic on global 'damage' (a nil value)
SCRIPT STACK
give_impact_damage() lib/units/weapons/raycastweaponbase.lua:2953
on_collision() lib/units/weapons/raycastweaponbase.lua:2830
_fire_raycast() lib/units/weapons/raycastweaponbase.lua:958
original() lib/units/weapons/raycastweaponbase.lua:574
fire() @mods/base/req/core/Hooks.lua:264
original() lib/units/weapons/newraycastweaponbase.lua:2079
fire() @mods/base/req/core/Hooks.lua:264
trigger_pressed() lib/units/weapons/raycastweaponbase.lua:467
Run() lib/units/beings/player/states/playerstandard.lua:5142
_check_action_primary_attack() @mods/PocoHud3/poco/../poco/Hud3.lua:2814
_update_check_actions() lib/units/beings/player/states/playerstandard.lua:1017
saw_original_playerstandard_update() lib/units/beings/player/states/playerstandard.lua:446
update() @mods/Saw Helper/lua/playerstandard.lua:39
original() lib/units/beings/player/playermovement.lua:279
@mods/base/req/core/Hooks.lua:264
One of the mods I have are Bot Weapons and Equipment and Useful Bots too

U238
Fixed an issue where the Aced version High Value Target might not apply correctly to SWAT Van Turrets.
not defined var - damage
https://tinyurl.com/27gvn6tq ( https://i.postimg.cc/sx5Z2mXJ/image.png )
I guess OVK want to use dmg_adjusted
( https://i.postimg.cc/zvC8wsxt/1.png ) but they copy wrong one
I've had the same crash as well, and can replicate it. Only mods I have loaded are Bot Weapons and Equipment, Useful Bots, and Responsive Responders.
Application has crashed: C++ exception
[string "lib/units/equipment/sentry_gun/sentrygundamag..."]:188: attempt to perform arithmetic on global 'damage' (a nil value)
SCRIPT STACK
give_impact_damage() lib/units/weapons/raycastweaponbase.lua:2953
on_collision() lib/units/weapons/raycastweaponbase.lua:2830
_fire_raycast() lib/units/weapons/raycastweaponbase.lua:958
fire() lib/units/weapons/raycastweaponbase.lua:574
fire() lib/units/weapons/newraycastweaponbase.lua:2079
trigger_held() lib/units/weapons/raycastweaponbase.lua:480
trigger_held() lib/units/weapons/newraycastweaponbase.lua:2064
_check_action_primary_attack() lib/units/beings/player/states/playerstandard.lua:5161
_update_check_actions() lib/units/beings/player/states/playerstandard.lua:1017
update() lib/units/beings/player/states/playerstandard.lua:446
original() lib/units/beings/player/playermovement.lua:279
@mods/base/req/core/Hooks.lua:264
Callstack:
As mentioned by Dr_Newbie, this is an issue on OVK's end. Until its fixed, you should be able to fix the crashing with this mod:
https://modworkshop.net/mod/42820