When creating a module without the modes array a missing 'module_langname' index is accessed

According to the documentation, when adding a new module through the migration, the "modes" parameter is optional, which means that when not provided, all modes will be loaded.

In practice, when “modes” is not provided, the if statement in this line is true so the index module_langname is accessed, returning a “Undefined index: module_langname” error.