Missing configuration file causes Traefik to load with defaults without clear error

When Traefik is configured to load a static configuration file from a path that doesn't exist, it may load with default or partial configuration instead of failing with a clear error message. This results in missing entrypoints, providers, and dashboard access, making sites inaccessible.

1. Verify all configuration file paths exist and are readable. 2. Check if symlinks in dynamic config directory point to valid files. 3. Enable log level TRACE to get detailed configuration loading information. 4. Compare the 'Static configuration loaded' debug message in logs against expected configuration to identify missing sections.