I dont know why this error occured

Ga-Al 시스템 LJ 퍼텐셜 기반 단순 침투 시뮬레이션

units metal
atom_style atomic
boundary p p p

----- 시뮬레이션 박스 정의 -----

region simbox block 0 30 0 30 0 100
create_box 2 simbox # 타입 1: Al, 타입 2: Ga

----- 알루미늄 생성 (타입 1) -----

lattice fcc 4.05
region al_block block 0 30 0 30 0 1
create_atoms 1 region al_block

----- 갈륨 생성 (타입 2) -----

region ga_block block 0 30 0 30 90 100
create_atoms 2 random 3 765915 ga_block

----- 질량 정의 -----

mass 1 26.98 # Al
mass 2 69.72 # Ga

----- 퍼텐셜: Lennard-Jones -----

pair_style lj/cut 10.0
pair_coeff 1 1 0.20 2.5 # Al-Al
pair_coeff 2 2 0.10 2.7 # Ga-Ga
pair_coeff 1 2 0.15 2.6 # Al-Ga (cross interaction)

----- 네이버리스트 -----

neighbor 2.0 bin
neigh_modify delay 0 every 1 check yes

----- 초기 속도 -----

velocity all create 300.0 12345 mom yes dist gaussian

----- 시간 통합 -----

fix 1 all nvt temp 300.0 300.0 0.1

----- 출력 설정 -----

dump 1 all custom 100 dump.ga_al.lammpstrj id type x y z
thermo 100

----- 실행 -----

run 500

--------------------------error mesage-------------------
ERROR: No overlap of box and region for create_atoms (src/create_atoms.cpp:779)
Last command: create_atoms 2 random 3 765915 ga_block

This was two hours ago:

Read the guidelines, your post violates all of them.

@yeongbin_yoon Please note that it is you that wants help from us. Since you are consistently ignoring our wishes (despite making statements to the contrary), the logical consequence is that we will now ignore you. This is a volunteer run operation and not some entitlement that you paid for with a service contract.