Octopress 1.0.2 doesn't work with Jekyll 3.8.5

[ukkm]

Some time ago I already worked successfully with the Octopress-Debugger. But now after I upgraded Jekyll to 3.8.5 I unfortunately can't use it. Jekyll uses Liquid 4.0.1 now. When I start Jekyll the generation process stops and is waiting for an input. By the way it would be nice when the debugger would show a prompt to signal its readiness. After I entered a command i.e. "c 'site'" nothing happens. The same is true when I intend to inspect a single variable i.e. "c 'image_name'".

For me the use of the inspect filter provided by Jekyll is no alternative because the output is escaped and doesn't show the real content of the variables and moreover it is not really readable.