The type AL\Common\Model\News\The was not found. Maybe you did not declare it correctly or list all dependencies?
The issue could also be caused by a filter entry in the build configuration.
If the path has been excluded in your configuration, e.g. excluded_paths:["lib/*"],
you can move it to the dependency path list as follows:
The expression return nl2br(InsertALCod...Smillies($this->text))) returns the type string which is incompatible with the documented return type AL\Common\Model\News\The.