Error is displayed when loading new packages in conf*.yaml

I use configuration packages, which are located in a separate directory and are includet in configuration.yaml.
packages: "!include_dir_named packages" is set correctly.
When I create a new package and save it in the packages directory, I get the following error message:

Error loading /config/configuration.yaml: in "/config/configuration.yaml", line 16, column 8: Unable to read file /config/alexa.yaml

I do not understand that. Packages that have been in the directory for a long time are recognized and included.

You’ll have to provide a bit more information.

what is the name of the new package file you created?

I assume you put it into the packages directory?

what is the file “alexa.yaml” that the error is referring to? is that the new package file name?

If so what are the contents of that alexa.yaml file?