diff --git a/app/Http/Controllers/Dashboard/DatatableController.php b/app/Http/Controllers/Dashboard/DatatableController.php
index bf90dcc..19c08d5 100644
--- a/app/Http/Controllers/Dashboard/DatatableController.php
+++ b/app/Http/Controllers/Dashboard/DatatableController.php
@@ -1751,13 +1751,13 @@ public function mediaProposal(Request $request)
             return DataTables::of($data)
                 ->addIndexColumn()
                 ->addColumn('name', function ($data) {
-                    return '<div style="width: 100%;word-wrap: break-word; white-space: normal;">'.$data->cooperation->name.'</div>';
+                    return '<div style="width: 100%;word-wrap: break-word; white-space: normal;">'.$data?->cooperation?->name.'</div>';
                 })
                 ->addColumn('start_date', function ($data) {
-                    return idn_date($data->cooperation->start_date, 'l, d F Y');
+                    return idn_date($data?->cooperation?->start_date, 'l, d F Y');
                 })
                 ->addColumn('end_date', function ($data) {
-                    return idn_date($data->cooperation->end_date, 'l, d F Y');
+                    return idn_date($data?->cooperation?->end_date, 'l, d F Y');
                 })
                 ->addColumn('send_proposal_at', function ($data) {
                     return idn_date($data->created_at, 'l, d F Y');