Something gone wrong during the project building...
Here's the output:
284.2 [ 98%] Building CXX object src/game/CMakeFiles/game.dir/vmap/WorldModel.cpp.o
286.5 during GIMPLE pass: vrp
286.5 /home/mangos/mangos/src/game/vmap/TileAssembler.cpp: In member function 'void VMAP::TileAssembler::exportGameobjectModels()':
286.5 /home/mangos/mangos/src/game/vmap/TileAssembler.cpp:332:10: internal compiler error: in compute_live_loop_exits, at tree-ssa-loop-manip.c:247
286.5 332 | void TileAssembler::exportGameobjectModels()
286.5 | ^~~~~~~~~~~~~
286.5 0xe34ddb internal_error(char const*, ...)
286.5 ???:0
286.5 0xe2b903 fancy_abort(char const*, int, char const*)
286.5 ???:0
286.5 Please submit a full bug report,
286.5 with preprocessed source if appropriate.
286.5 Please include the complete backtrace with any bug report.
286.5 See <file:///usr/share/doc/gcc-11/README.Bugs> for instructions.
286.5 make[2]: *** [src/game/CMakeFiles/game.dir/build.make:9261: src/game/CMakeFiles/game.dir/vmap/TileAssembler.cpp.o] Error 1
286.5 make[2]: *** Waiting for unfinished jobs....
287.1 make[1]: *** [CMakeFiles/Makefile2:728: src/game/CMakeFiles/game.dir/all] Error 2
287.1 make: *** [Makefile:136: all] Error 2
Try to understand what the problem is and resolve it.