Erro no Buffer
 

você tem que adicionar a linha __inity__py do seu Npc em data/scripts.cfg ex:
# custom
custom/0002_ShopVip/__init__.py
custom/0003_ShopHero/__init__.py
custom/0004_ShopLord/__init__.py
custom/3995_echo/__init__.py
custom/4000_ShadowWeapons/__init__.py
custom/5000_MissQueen/__init__.py
custom/5001_NewbieCoupons/__init__.py
custom/8003_MeetBaium/__init__.py
custom/6050_KetraOrcSupport/__init__.py
custom/6051_VarkaSilenosSupport/__init__.py
custom/6999_HeroCirclet/__init__.py
custom/7000_HeroItems/__init__.py
custom/8000_RaidbossInfo/__init__.py
custom/8001_NpcLocationInfo/__init__.py
custom/8009_HotSpringsBuffs/__init__.py
custom/8871_gve/__init__.py
custom/6666_NoblessTrader/__init__.py
custom/6667_ClanManager/__init__.py
custom/20701_NPCBuffer/__init__.py
custom/15010_NPCBuffer/__init__.py
custom/20707_Ranking/__init__.py