Configure plugin with opts?

[nathanielevan]

Hi, I understand in the package spec in the documentation it is strongly encouraged to use opts instead of config to configure a plugin.

The config key commented out in the screenshot, if used instead of opts, correctly loads the plugin with my settings (plugins.config.alpha-nvim returns a table) but if I use opts, I get this error when I start nvim:

Any idea why this is? I do notice that my plugin directory is no longer included in the runtime path, could you perhaps clarify what opts is supposed to do? Thanks in advance.