diff --git a/app/Controllers/Items.php b/app/Controllers/Items.php
index 8060885bc..dbcdcc4d6 100644
--- a/app/Controllers/Items.php
+++ b/app/Controllers/Items.php
@@ -765,7 +765,7 @@ class Items extends Secure_Controller
 						'trans_inventory' => $updated_quantity - $item_quantity->quantity
 					];
 
-					$success &= $this->inventory->insert($inv_data);
+					$success &= $this->inventory->insert($inv_data, false);
 				}
 			}
 
@@ -908,7 +908,7 @@ class Items extends Secure_Controller
 			'trans_inventory' => parse_quantity($this->request->getPost('newquantity'))
 		];
 
-		$this->inventory->insert($inv_data);
+		$this->inventory->insert($inv_data, false);
 
 		//Update stock quantity
 		$item_quantity = $this->item_quantity->get_item_quantity($item_id, $location_id);
@@ -1362,7 +1362,7 @@ class Items extends Secure_Controller
 				$this->item_quantity->save_value($item_quantity_data, $item_data['item_id'], $location_id);
 
 				$csv_data['trans_inventory'] = $row["location_$location_name"];
-				$this->inventory->insert($csv_data);	//TODO: Reflection Exception
+				$this->inventory->insert($csv_data, false);
 			}
 			elseif($is_update)
 			{
@@ -1374,7 +1374,7 @@ class Items extends Secure_Controller
 				$this->item_quantity->save_value($item_quantity_data, $item_data['item_id'], $location_id);
 
 				$csv_data['trans_inventory'] = 0;
-				$this->inventory->insert($csv_data);	//TODO: Reflection Exception
+				$this->inventory->insert($csv_data, false);
 			}
 		}
 	}
diff --git a/app/Database/Migrations/20220127000000_convert_to_ci4.php b/app/Database/Migrations/20220127000000_convert_to_ci4.php
index c86df6517..f795c310b 100644
--- a/app/Database/Migrations/20220127000000_convert_to_ci4.php
+++ b/app/Database/Migrations/20220127000000_convert_to_ci4.php
@@ -6,7 +6,7 @@ use App\Models\Appconfig;
 use CodeIgniter\Database\Forge;
 use CodeIgniter\Database\Migration;
 use CodeIgniter\HTTP\RedirectResponse;
-use CodeIgniter\Router\Exceptions\RedirectException;
+use CodeIgniter\HTTP\Exceptions\RedirectException;
 use Config\Encryption;
 use Config\Services;
 
diff --git a/app/Models/Inventory.php b/app/Models/Inventory.php
index 1c77f8628..23eda3e4f 100644
--- a/app/Models/Inventory.php
+++ b/app/Models/Inventory.php
@@ -2,10 +2,8 @@
 
 namespace App\Models;
 
-use CodeIgniter\Database\BaseResult;
 use CodeIgniter\Database\ResultInterface;
 use CodeIgniter\Model;
-use ReflectionException;
 
 /**
  * Inventory class
@@ -28,20 +26,6 @@ class Inventory extends Model
 		'trans_location'
 	];
 
-	/**
-	 * Insert new data into the Inventory table.
-	 *
-	 * @param array|null|object $inventory_data Data to be inserted into the inventory table.
-	 * @param bool $returnID Returns the value of the ID column for the inserted row.
-	 * @return int|string|bool The ID of the inserted row on success or false on failure
-	 */
-	public function insert($inventory_data = null, bool $returnID = true)
-	{
-		$builder = $this->db->table('inventory');
-
-		return $builder->insert($inventory_data, $returnID);
-	}
-
 	/**
 	 * @param $comment
 	 * @param $inventory_data
diff --git a/app/Models/Item.php b/app/Models/Item.php
index 541ac7f90..943876a1e 100644
--- a/app/Models/Item.php
+++ b/app/Models/Item.php
@@ -510,7 +510,6 @@ class Item extends Model
 
 	/**
 	 * Deletes one item
-	 * @throws ReflectionException
 	 */
 	public function delete($item_id = null, bool $purge = false)
 	{
@@ -547,7 +546,6 @@ class Item extends Model
 
 	/**
 	 * Deletes a list of items
-	 * @throws ReflectionException
 	 */
 	public function delete_list(array $item_ids): bool
 	{
diff --git a/app/Models/Receiving.php b/app/Models/Receiving.php
index 8c70f5752..d772f0274 100644
--- a/app/Models/Receiving.php
+++ b/app/Models/Receiving.php
@@ -185,7 +185,7 @@ class Receiving extends Model
 				'trans_inventory' => $items_received
 			];
 
-			$inventory->insert($inv_data);
+			$inventory->insert($inv_data, false);
 			$attribute->copy_attribute_links($item_data['item_id'], 'receiving_id', $receiving_id);
 			$supplier = $supplier->get_info($supplier_id);	//TODO: supplier is never used after this.
 		}
@@ -247,7 +247,7 @@ class Receiving extends Model
 					'trans_inventory' => $item['quantity_purchased'] * (-$item['receiving_quantity'])
 				];
 				// update inventory
-				$inventory->insert($inv_data);
+				$inventory->insert($inv_data, false);
 
 				// update quantities
 				$item_quantity->change_quantity($item['item_id'], $item['item_location'], $item['quantity_purchased'] * (-$item['receiving_quantity']));
diff --git a/app/Models/Sale.php b/app/Models/Sale.php
index e2794f66a..9cddabec2 100644
--- a/app/Models/Sale.php
+++ b/app/Models/Sale.php
@@ -783,7 +783,7 @@ class Sale extends Model
 					'trans_inventory' => -$item_data['quantity']
 				];
 
-				$inventory->insert($inv_data);
+				$inventory->insert($inv_data, false);
 			}
 
 			$attribute->copy_attribute_links($item_data['item_id'], 'sale_id', $sale_id);
@@ -955,7 +955,7 @@ class Sale extends Model
 						'trans_inventory' => $item_data['quantity_purchased']
 					];
 					// update inventory
-					$inventory->insert($inv_data);
+					$inventory->insert($inv_data, false);
 
 					// update quantities
 					$item_quantity->change_quantity($item_data['item_id'], $item_data['item_location'], $item_data['quantity_purchased']);