How do I add additional information to plugin Verbose logging?

How to I change Kong source such that when verbose printing to list matching files for the configuration variable lua_package_path are listed, in addition to their exposed variables? An example might look like:

... [debug] lua_package_path = ./?.lua;./?/init.lua;;...;
... [debug] - '/.../': val1, val2
... [debug] - '/.../.../': val3, val4

I am trying to debug why when following the guide to manually install plugins via (un)Installing your plugin - v3.0.x | Kong Docs using the example empty plugin at GitHub - Kong/kong-plugin: Simple template to get started with custom Kong plugins is failing with

nginx: [error] init_by_lua error: /usr/local/share/lua/5.1/kong/init.lua:629: error loading plugin schemas: on plugin 'plugin': plugin plugin is enabled but not installed;
no plugin found

According to what I am seeing locally, the files should be seen, recognized, and loaded. This additional information would clarify what is broken.