Cannot convert undefined or null to object

[Sau1707]

 getCelebrationsList = (type)=>{
       const celebrationModels = uw.MM.getModels().Celebration;
       const triumphs = Object.values(celebrationModels).filter((celebration)=>celebration.attributes.celebration_type === type).map((triumph)=>triumph.attributes.town_id);
       return triumphs;
}

If there are no celebrations the celebrationModels it's null and raise an error

[Sau1707]

should be fixed