Due to changes in the Blender API, code that runs normally on version 3.2 may experience issues on later versions. During the Blender 3.6 real machine testing of this add-on, it was found that if Blender interface translation was enabled, an error of "Unable to find 'Principled BSDF'" may be reported. In this case, set Blender's language to English, exit the program, re-enter, and repeat the operations above, that could work.

Please check if you have followed the add-on usage in the documentation. Especially have one set one's time zone (e.g. UTC+08) and local time correctly. Then double check if one have given the right location, the north latitude and east longitude are represented by positive numbers; The south latitude and west longitude are represented by negative numbers.