Merge pull request 'dev-wahyu' (#64) from dev-wahyu into staging

Reviewed-on: ordo/adw-backend#64
Reviewed-by: ibnu <ibnu@mail.com>

app/Http/Controllers/ActivityController.php

@@ -465,7 +465,7 @@ class ActivityController extends Controller
 				$activity->save();
 				$activity->level = $activity_row['level'];
       }
-      if (isset($data['activities'][$i]['nik'])) {
+      if (isset($data['activities'][$i]['nik']) && $data['activities'][$i]['nik'] != '') {
         $user = User::where("ktp_number", $data['activities'][$i]['nik'])->first();	
         $userProyek = UserToProyek::where("user_id", $user->id)
           ->where("proyek_id", $projectId)