diff --git a/app/adminapi/lists/cost_project/CostApprovedProjectLists.php b/app/adminapi/lists/cost_project/CostApprovedProjectLists.php
index acdb677ec..11d2297ef 100644
--- a/app/adminapi/lists/cost_project/CostApprovedProjectLists.php
+++ b/app/adminapi/lists/cost_project/CostApprovedProjectLists.php
@@ -69,11 +69,11 @@
 					$dept = Dept::where('id', 'in', [$data['signed_dept'], $data['supervise_dept']])->column('name', 'id');
 					$admin = Admin::where('id', 'in', [$data['part_b_signatory'], $data['signed_head'], $data['project_manager'], $data['seal_user']])->column('name', 'id');
 					$data['part_a_name'] = $custom['name'];
-					$data['signed_dept_name'] = $dept[$data['signed_dept']];
-					$data['supervise_dept_name'] = $dept[$data['supervise_dept']];
-					$data['signed_head_name'] = $admin[$data['signed_head']];
-					$data['project_manager_name'] = $admin[$data['project_manager']];
-					$data['seal_user_name'] = $admin[$data['seal_user']];
+					$data['signed_dept_name'] = $dept[$data['signed_dept']] ?? '';
+					$data['supervise_dept_name'] = $dept[$data['supervise_dept']] ?? '';
+					$data['signed_head_name'] = $admin[$data['signed_head']] ?? '';
+					$data['project_manager_name'] = $admin[$data['project_manager']] ?? '';
+					$data['seal_user_name'] = $admin[$data['seal_user']] ?? '';
 					$data['contract_type_text'] = $data->contract_type_text;
 					$data['business_nature_text'] = $data->business_nature_text;
 					$data['industry_nature_text'] = $data->industry_nature_text;