PAC3 Event "is_touching" causing script errors

[SoundCrafterYT]

For some reason, the is_touching events are not working.
When I typed is_touching, it showed me this error:

[PAC3] lua/pac3/core/client/parts/event.lua:971: Tried to use a NULL entity!
1. BoundingRadius - [C]:-1
2. GetNiceName - lua/pac3/core/client/parts/event.lua:971
3. get - lua/pac3/core/client/base_part.lua:92
4. Populate - lua/pac3/editor/client/panels/properties.lua:714
5. PopulateProperties - lua/pac3/editor/client/logic.lua:10
6. Call - lua/pac3/editor/client/parts.lua:515
7. OnValueChanged - lua/pac3/editor/client/panels/properties.lua:832
8. OnEnter - lua/pac3/editor/client/panels/properties.lua:1615
9. unknown - lua/vgui/dtextentry.lua:79

[PAC3] lua/pac3/core/client/parts/event.lua:971: Tried to use a NULL entity!
1. BoundingRadius - [C]:-1
2. GetNiceName - lua/pac3/core/client/parts/event.lua:971
3. GetName - lua/pac3/core/client/base_part.lua:92
4. unknown - lua/pac3/editor/client/panels/tree.lua:156

[PAC3] lua/pac3/core/client/parts/event.lua:971: Tried to use a NULL entity!
1. BoundingRadius - [C]:-1
2. GetNiceName - lua/pac3/core/client/parts/event.lua:971
3. unknown - lua/pac3/core/client/base_part.lua:92
4. ToSaveTable - lua/pac3/core/client/base_part.lua:1007
5. ToSaveTable - lua/pac3/core/client/base_part.lua:1024
6. unknown - lua/pac3/editor/client/saved_parts.lua:111