Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in /opt/lampp/htdocs/tsipu/database/migrations/2026_04_18_212508_create_pl_non_periodic_table.php:7 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/tsipu/database/migrations/2026_04_18_212508_create_pl_non_periodic_table.php on line 7