Squashed 'libertree-backend-rb/' changes from 7d92847..ecd0ce5

ecd0ce5 fix bugs in service script

git-subtree-dir: libertree-backend-rb
git-subtree-split: ecd0ce562df314ec29c928e966083adc44709064
Merge commit '26e98091b6e08e0c5c9095d9a51eac7987aa221c'