Task: Expose all error messages?

[orbitalturtle]

Description

In some places in the code, full error messages aren't bubbled up to the user. It would be nice to walk through the code and fix these areas. There have been a couple of times I had to manually go into the code and add a print statement to figure out what was wrong with my lndk setup -- would be better to avoid that

Steps to Complete

1. Identify where precise errors aren't being printed. Also aim identity whether the particular function throws errors that might be useful for the user.
2. Print these error messages so the user has an idea of how they can get lndk working properly.