TFS 1.X+ Compiler error: scheduler.h

[cs007]

Hey guys.

I am facing the following error:

[  1%] Building CXX object CMakeFiles/tfs.dir/src/actions.cpp.o
cc1plus: warning: /home/ubuntu/sources/build/cotire/tfs_CXX_prefix.hxx.gch: not used because `__STRICT_ANSI__' not defined [-Winvalid-pch]
In file included from /home/ubuntu/sources/src/viewer.h:27:0,
                 from /home/ubuntu/sources/src/player.h:41,
                 from /home/ubuntu/sources/src/game.h:30,
                 from /home/ubuntu/sources/src/actions.cpp:26:
/home/ubuntu/sources/src/scheduler.h:66:44: error: ‘steady_timer’ is not a member of ‘boost::asio’
  std::unordered_map<uint32_t, boost::asio::steady_timer> eventIdTimerMap;
                                            ^~~~~~~~~~~~
/home/ubuntu/sources/src/scheduler.h:66:44: note: suggested alternative: ‘deadline_timer’
  std::unordered_map<uint32_t, boost::asio::steady_timer> eventIdTimerMap;
                                            ^~~~~~~~~~~~
                                            deadline_timer
/home/ubuntu/sources/src/scheduler.h:66:44: error: ‘steady_timer’ is not a member of ‘boost::asio’
/home/ubuntu/sources/src/scheduler.h:66:44: note: suggested alternative: ‘deadline_timer’
  std::unordered_map<uint32_t, boost::asio::steady_timer> eventIdTimerMap;
                                            ^~~~~~~~~~~~
                                            deadline_timer
/home/ubuntu/sources/src/scheduler.h:66:56: error: template argument 2 is invalid
  std::unordered_map<uint32_t, boost::asio::steady_timer> eventIdTimerMap;
                                                        ^
/home/ubuntu/sources/src/scheduler.h:66:56: error: template argument 5 is invalid
/home/ubuntu/sources/src/scheduler.h:67:15: error: ‘io_context’ in namespace ‘boost::asio’ does not name a type
  boost::asio::io_context io_context;
               ^~~~~~~~~~
/home/ubuntu/sources/src/scheduler.h:68:15: error: ‘io_context’ in namespace ‘boost::asio’ does not name a type
  boost::asio::io_context::work work{ io_context };
               ^~~~~~~~~~
/home/ubuntu/sources/src/scheduler.h: In member function ‘void Scheduler::threadMain()’:
/home/ubuntu/sources/src/scheduler.h:63:22: error: ‘io_context’ was not declared in this scope
  void threadMain() { io_context.run(); }
                      ^~~~~~~~~~
/home/ubuntu/sources/src/scheduler.h:63:22: note: suggested alternative: ‘sve_context’
  void threadMain() { io_context.run(); }
                      ^~~~~~~~~~
                      sve_context
CMakeFiles/tfs.dir/build.make:101: recipe for target 'CMakeFiles/tfs.dir/src/actions.cpp.o' failed
make[2]: *** [CMakeFiles/tfs.dir/src/actions.cpp.o] Error 1
CMakeFiles/Makefile2:99: recipe for target 'CMakeFiles/tfs.dir/all' failed
make[1]: *** [CMakeFiles/tfs.dir/all] Error 2
Makefile:83: recipe for target 'all' failed
make: *** [all] Error 2

I managed to "solve" it, but I can't connect to the game after success.
Source GIT: GitHub - Brunowots/RealMap-Global-8.0-With-Mount-Market-TFS-1.2: RealMap Global 8.0 with mount and market, items 12/13 (https://github.com/Brunowots/RealMap-Global-8.0-With-Mount-Market-TFS-1.2)
System: Ubuntu 18.04