attept 2 at site fix

docs/modules/website_billing_rebuild.md

@@ -216,3 +216,72 @@ Customer-facing account pages:
 - Paid order appears in provisioning queue.
 - Customer orders, invoices, and My Servers pages show only the authenticated user's records.
 - No hardcoded credentials or raw PHP errors are displayed.
+
+## HTTP 500 Troubleshooting
+
+### Login remains on `login.php`
+
+Check:
+
+- submitted field names are `login`, `password`, and `csrf_token`
+- CSRF token validates
+- the Panel user exists in the configured `users` table
+- `users_passwd` matches the current Panel-compatible hash
+- account role is not `banned`
+- no output is sent before the redirect
+- successful login redirects to `my_account.php` unless a safe internal return path is stored
+
+The website also provides `account.php` and `my_account.php` as compatible account routes.
+
+### `staff.php` HTTP 500 or blank output
+
+Common causes:
+
+- PHP 8-only syntax deployed on a PHP 7.x host
+- missing production files from `Panel/modules/website/pages/`
+- missing `includes/billing.php`
+- fatal error suppressed by production `display_errors=0`
+- non-admin account expecting staff access
+
+The website bootstrap avoids PHP 8-only constructs and installs a shutdown handler that logs fatal errors with a short reference ID. Staff pages must render through shared website templates and must not point to the Panel activity logger.
+
+### `staff_services.php` HTTP 500
+
+Check:
+
+- `billing_services` exists
+- staff migrations have been run
+- expected catalog columns exist or can be added by the idempotent migration runner
+- `remote_servers` schema is the current Panel schema
+- the page is not assuming `remote_servers.enabled` exists
+
+The current helper treats missing `remote_servers.enabled` as enabled for display and lets staff assign locations from current Panel remote-server rows.
+
+### `order.php?service_id=...` HTTP 500
+
+Check:
+
+- `billing_services` exists
+- the requested `service_id` exists
+- the service is enabled if the `enabled` column exists
+- `remote_server_id` contains at least one valid location ID
+- configured slot columns are present or defaults are acceptable
+- `config_homes` exists when game metadata is needed
+
+The order page no longer requires `config_homes`; it can render from the service row alone. Missing or disabled services produce a styled unavailable page instead of blank output.
+
+### Wrong Panel Administration URL
+
+Website staff administration must link to:
+
+- `staff.php`
+
+It must not link to:
+
+- `home.php?m=administration&p=watch_logger`
+
+The Panel activity logger is operational administration, not website sales/billing administration.
+
+### Log Locations
+
+Production PHP or web-server logs are deployment-specific. Check Apache, Nginx, PHP-FPM, cPanel `error_log`, and PHP `error_log` paths. The local repository does not contain live web-server error logs.