fixing add prescription

app/Models/PrescriptionItem.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class PrescriptionItem extends Model
+{
+    use HasFactory;
+    protected $fillable = [
+        'prescription_id',
+        'drug_id',
+        'qty',
+        'unit_id',
+        'note',
+        'signa'
+    ];
+}