I have tried to install blockbook according to this manual

https://wiki.trezor.io/User_manual:Running_a_local_instance_of_Trezor_Wallet_backend_(Blockbook)

after installing bitcoind and waiting about a week to sychronize blockchain, I try to install blockbook. gdebi writes me

This package is uninstallable
Dependency is not satisfiable: libstdc++6 (>= 6)

....I think blockbook (or the backend installer) could have told me this first, before I synched the blockchain.