Merge branch 'redmine-issues/17552' into 'develop'

REDMINE_ISSUE-17552 | symbologie du type de signalement

See merge request !598

src/services/map-service.js

@@ -380,7 +380,7 @@ const mapService = {
     if (colors_style && colors_style.custom_field_name && customfield_set) {
       const fieldType = customfield_set.find((el) => el.name === colors_style.custom_field_name).field_type;
       let currentValue = properties[colors_style.custom_field_name];
-      if(currentValue & typeof currentValue === 'string') currentValue = currentValue.trim(); // remove leading and trailing whitespaces
+      if(currentValue && typeof currentValue === 'string') currentValue = currentValue.trim(); // remove leading and trailing whitespaces
 
       switch (fieldType) {
       case 'list':