Dup entry error handler

modules/travel/back/methods/travel/cloneWithEntries.js

@@ -48,6 +48,7 @@ module.exports = Self => {
         let stmts = [];
         let stmt;
 
+        try {
             stmt = new ParameterizedSQL(
                 `CALL travel_cloneWithEntries(?, ?, ?, ?, @vTravelFk)`, [
                     id, started, ended, travel.ref]);
@@ -83,5 +84,10 @@ module.exports = Self => {
             });
 
             return newTravel.id;
+        } catch (error) {
+            if (error.code === 'ER_DUP_ENTRY')
+                throw new UserError('A travel with this data already exists');
+            throw error;
+        }
     };
 };