<extension class="org.ametys.cms.search.ui.model.StaticSearchUIModel">
    <SearchModel>
        <content-types>
           <content-type id="project"/>
        </content-types>
        
        <simple-search-criteria>
            <item ref="project-thisyear" multiple="true">
                <label i18n="false">Année d'activité</label>
                <test-operator>eq</test-operator>
                <default-value>0</default-value>
            </item>

Caused by: java.lang.ArrayStoreException: arraycopy: element type mismatch: can not cast one of the elements of java.lang.Object[] to the type of the destination array, java.lang.Long
	at java.base/java.util.ArrayList.toArray(ArrayList.java:401)
	at org.ametys.runtime.model.DefaultElementDefinition.getDefaultValue(DefaultElementDefinition.java:302)
	at org.ametys.cms.search.model.impl.AbstractCriterionDefinition._defaultValueToJSON(AbstractCriterionDefinition.java:69)
	at org.ametys.runtime.model.DefaultElementDefinition._toJSON(DefaultElementDefinition.java:401)
	at org.ametys.cms.search.model.impl.ReferencingSearchModelCriterionDefinition._toJSON(ReferencingSearchModelCriterionDefinition.java:119)