Undefined index: xxxx

[janimattiellonen]

A lot of configurations are currently assumed to be configured. If they are not, then a "Undefined index: xxx" warning is issued.

Maybe add an isset() call to mitigate these unnecessary warnings?
If these are required values then an exception could be thrown if a specific index is missing.

See Xi\Bundle\FilelibBundle\DependencyInjection\XiFilelibExtension::load()

[janimattiellonen]

Apparently this can be fixed also by using addDefaultsIfNotSet() in Xi\Bundle\FilelibBundle\DependencyInjection\Configuration class and provide sensible defaults.