function get_scheme_by_section(section)
local scheme = string.gsub(section, "%d", "")
local at, to = string.find(scheme, "@", 1, true)
if at and to then
scheme = string.sub(scheme, 1, at - 1)
end
return scheme
end

FATAL ERROR

[error]Expression : !m_error_code
[error]Function : raii_guard::~raii_guard
[error]File : ..\xrServerEntities\script_storage.cpp
[error]Line : 748
[error]Description : ...k.e.r. call of pripyat\gamedata\scripts\utils.script:469: bad argument #1 to 'gsub' (string expected, got nil)


stack trace:

[logic@esc_army_sertucov]
active = animpoint@base
suitable = {=check_npc_name(esc_army_sertucov)} true
prior = 200

[animpoint@base]
use_camp = false
avail_animations = animpoint_stay_wall
cover_name = esc_sertucov_cover
;reach_distance = 1.5
meet = no_meet
on_info = {+esc_army_leader_start_dialog_end_info} walker@1
combat_ignore_cond = true
combat_ignore_keep_when_attacked = true
invulnerable = true
;out_restr = zat_a2_noweap
gather_items_enabled = false
help_wounded_enabled = false
corpse_detection_enabled = false

[walker@1]
path_walk = sertucov_walk
path_look = sertucov_look
meet = no_meet
on_info = {+esc_sidor_clear_sky_armor_dialog_end_info} walker@2
def_state_moving = rush
combat_ignore_cond = true

[walker@2]
path_walk = sertucov_1_walk
path_look = sertucov_1_look
meet = meet@1
on_info = {+esc_sertucov_kill} walker@enemy %=actor_enemy%
def_state_moving = sprint
combat_ignore_cond = true
combat_ignore_keep_when_attacked = true
invulnerable = true
gather_items_enabled = false
def_state_moving = sprint
help_wounded_enabled = false
corpse_detection_enabled = false

[meet@1]
use = {-esc_army_sertucov_start_dialog_end_info !actor_enemy =dist_to_actor_le(5)} self, true
allow_break = false
trade_enable = false
meet_on_talking = false
meet_dialog = esc_army_sertucov_start_dialog

[walker@enemy]
path_walk = sertucov_1_walk
path_look = sertucov_1_look
meet = no_meet
combat_ignore_cond = false