[Error] undefined method `*' for nil:NilClass problem

[Commiku]

I created a new area in my game, but whenever I enter it, the game crashes and I get this error:

[Pokémon Essentials version 17]
Exception: NoMethodError
Message: undefined method `*' for nil:NilClass
Game_Character:202:in `screen_z'
Sprite_Character:154:in `shadow_update'
Sprite_DynamicShadows:168:in `update_or'
Tilemap_Perspective:436:in `update'
Spriteset_Map:158:in `_animationSprite_update'
Spriteset_Map:154:in `each'
Spriteset_Map:154:in `_animationSprite_update'
Sprite_AnimationSprite:84:in `update'
Scene_Map:41:in `updateSpritesets'
Scene_Map:35:in `each'
[Pokémon Essentials version 17]
Exception: NoMethodError
Message: undefined method `*' for nil:NilClass
Game_Character:202:in `screen_z'
Sprite_Character:154:in `shadow_update'
Sprite_DynamicShadows:168:in `update_or'
Tilemap_Perspective:436:in `update'
Spriteset_Map:158:in `_animationSprite_update'
Spriteset_Map:154:in `each'
Spriteset_Map:154:in `_animationSprite_update'
Sprite_AnimationSprite:84:in `update'
Scene_Map:41:in `updateSpritesets'
Scene_Map:35:in `each'


I've also attached the tileset for the map
thanks!