Added hasMany relation on model file and item description on exporter file and commented unwanted warning msg, added disabled function on edit for plant, line, item columns in resource file

app/Filament/Exports/ProcessOrderExporter.php

@@ -28,6 +28,8 @@ class ProcessOrderExporter extends Exporter
                 ->label('LINE NAME'),
             ExportColumn::make('item.code')
                 ->label('ITEM CODE'),
+            ExportColumn::make('item.description')
+                ->label('ITEM DESCRIPTION'),
             ExportColumn::make('process_order')
                 ->label('PROCESS ORDER'),
             ExportColumn::make('coil_number')