- laravel framework upgrade frpm 7.x to 8. see also: https://laravel.com/docs/8.x/upgrade#assert-exact-json-method

- use  PHP7 null coalesce operator instead of laravel optional method
- change Breadcrumbs::register method to Bredcrumbs::for method
- composer updates

database/seeders/ProjectsTableSeeder.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace Database\Seeders;
+
+use Carbon\Carbon;
+use Illuminate\Database\Seeder;
+use Illuminate\Support\Facades\DB;
+
+class ProjectsTableSeeder extends Seeder
+{
+    /**
+     * Run the database seeds.
+     *
+     * @return void
+     */
+    public function run()
+    {
+        DB::table('projects')->insert([
+            [
+                'label' => 'ALLG_FACHLICH',
+                'name' => 'Allgemein fachliche Arbeiten',
+                'description' => 'Allgemein fachlich interdisziplinäre Arbeiten',
+                'created_at' => Carbon::now(),
+                'updated_at' => Carbon::now(),
+            ],
+        ]);
+    }
+}