What was wrong?

The humanize utilities could potentially benefit from a humanize_wei function for easy human readable ether values

How can it be fixed?

Exact behavior probably has some room for opinions on the most readable format but at a high level, the function should convert the value to the representation that reduces trailing zeros.

It might be good to prioritize

graphviz-java offers several implementations of Graphviz. The problem is that those implementations are quite "fragile", i.e. if the first one defined is determined to be "available" by graphviz-java, it will be used even if it causes errors down the line on a specific machine.

An example here is an old CLI version of Graphviz unable to create a specific format, or a Nashhorn version unable