Create namespace

composer.json

@@ -5,5 +5,10 @@
     },
     "config": {
         "platform-check": false
+    },
+    "autoload": {
+        "psr-4": {
+            "Blog\\": "src/"
+        }
     }
 }

public/index.php

@@ -1,13 +1,22 @@
 <?php
+
+namespace Blog;
+
+
+
 session_start();
 
 use Psr\Http\Message\ResponseInterface as Response;
 use Psr\Http\Message\ServerRequestInterface as Request;
 use Slim\Factory\AppFactory;
+use SQLite3;
 
 require __DIR__ . '/../vendor/autoload.php';
 
 $app = AppFactory::create();
+
+
+
 class MyDB extends SQLite3
 {
     function __construct()