Ruby 3.2.0 / Rails 7.0.4 invalid byte sequence in UTF-8 (ArgumentError)

[jasonfine]

irb(main):001:0> image_optim = ::ImageOptim.new
/usr/local/bundle/gems/image_optim-0.31.2/lib/image_optim/bin_resolver/bin.rb:124:in `[]': invalid byte sequence in UTF-8 (ArgumentError)

          date_str = capture("#{escaped_path} 2>&1")[date_regexp]
                                                     ^^^^^^^^^^^
irb(main):002:0> 

[toy]

From the error looks like running pngout 2>&1 in your environment gives a string that can't be converted to UTF-8.
What does running `pngout 2>&1` output and what is the encoding of the string?
And environment questions:
Is it dependant on ruby version and presence of rails?
Is it plain irb, rails console or something else?
Something special about the environment?

[jasonfine]

What does running pngout 2>&1 output and what is the encoding of the string?

Sorry - where should i run this command?

And environment questions:
Is it dependant on ruby version and presence of rails?

This started happening after upgrading Ruby 3.1 to 3.2, and yes this is in the context of a Rails 7.0.4 app.

Is it plain irb, rails console or something else?

Rails console

Something special about the environment?

Using Docker

[toy]

Sorry - where should i run this command?

In the same console, as ImageOptim.new

Using Docker

Would you be able to create minimal reproducible example then?

[jasonfine]

Upon closer inspection, i think this is due to missing binaries.

Thanks for your time