fix(loads): onDelivered, proposal.load doesn't exists

v1/src/lib/Handlers/Events/Loads/index.js

@@ -13,18 +13,18 @@ const proposalsModel = getModel('proposals');
 async function onDelivered( userId, elementId ){
     const load  = await loadsModel.findById( elementId );
     const proposal_list = await proposalsModel.find({
-        load: load.id,
+        load: elementId,
         is_accepted: true,
         is_completed: false
     });
     const vehicle_list = await vehiclesModel.find({
-        active_load: load.id
+        active_load: elementId
     });
 
     const current_date = new Date();
 
     /// Update Load: Remove vehicle and driver reference for data safety.
-    await loadsModel.findByIdAndUpdate( proposal.load, {
+    await loadsModel.findByIdAndUpdate( elementId, {
         driver: null,
         vehicle: null,
         status: "Closed",