cannot compile BBR on Ubuntu 20.04 focal

[yodel-settles]

@cryptozoidberg pls help, cannot compile BBR on Ubuntu 20.04 focal

using compile steps from:
https://github.com/cryptozoidberg/boolberry

during make daemon simplewallet step (same errors with Clang)

errors
#1 contrib/epee/include/net/abstract_tcp_server2.inl:173:20 error: ‘boost::asio::ip::tcp::socket’ {aka ‘class boost::asio::basic_stream_socketboost::asio::ip::tcp’} has no member named ‘get_io_service’

#2 contrib/epee/include/net/abstract_tcp_server2.inl:277:28: error: ‘boost::asio::ip::tcp::socket’ {aka ‘class boost::asio::basic_stream_socketboost::asio::ip::tcp’} has no member named ‘get_io_service’
277 | size_t cnt = socket_.get_io_service().run_one();

#3 contrib/epee/include/net/abstract_tcp_server2.inl:287:28: error: ‘boost::asio::ip::tcp::socket’ {aka ‘class boost::asio::basic_stream_socketboost::asio::ip::tcp’} has no member named ‘get_io_service’
287 | size_t cnt = socket_.get_io_service().poll_one();