fix: add missing task logic to task repo

src/Repositories/TaskRepository.php

@@ -4,6 +4,7 @@ namespace Repositories;
 
 use Carbon\Carbon;
 use Database\Connection;
+use Exceptions\TaskNotFoundException;
 use Interfaces\TaskDao;
 use Models\Task;
 use PDO;
@@ -48,12 +49,20 @@ class TaskRepository implements TaskDao
         return $stmt->fetchAll(PDO::FETCH_ASSOC);
     }
 
+    /**
+     * @throws TaskNotFoundException
+     */
     public function readById($id): Task
     {
         $stmt = $this->conn->prepare('SELECT * FROM Tasks WHERE id = ?');
         $stmt->execute([$id]);
 
-        return Task::fromArray($stmt->fetch(PDO::FETCH_ASSOC));
+        if (!$data = $stmt->fetch(PDO::FETCH_ASSOC))
+        {
+            throw new TaskNotFoundException('Task not found.');
+        }
+
+        return Task::fromArray($data);
     }
 
     public function update(Task $task): bool