=== Debug Invoice Mark as Paid ===

✓ Configuration loaded
✗ Error: Database connection failed: SQLSTATE[HY000] [1045] Access denied for user 'customer1_user'@'localhost' (using password: YES)
Stack trace:
#0 /var/www/factur-x/src/Database.php(18): FacturX\Database->connect()
#1 /var/www/factur-x/src/InvoiceGenerator.php(21): FacturX\Database->__construct()
#2 /var/www/factur-x/debug_invoice_paid.php(23): FacturX\InvoiceGenerator->__construct()
#3 {main}