Sometimes I'll see this on trying to launch mame:

Code
      /|  /|    /|     /|  /|    _______
      / | / |   / |    / | / |   /      /
     /  |/  |  /  |   /  |/  |  /  ____/ 
    /       | /   |  /       | /  /_     
   /        |/    | /        |/  __/     
  /  /|  /|    /| |/  /|  /|    /____    
 /  / | / |   / |    / | / |        /    
/ _/  |/  /  /  |___/  |/  /_______/     
         /  /                            
        / _/                             

mame 0.236	
Copyright (C) Nicola Salmoria and the MAME team

Lua 5.3	
Copyright (C) Lua.org, PUC-Rio

dbus[2234616]: arguments to dbus_message_new_method_call() were incorrect, assertion "path != NULL" failed in file ../../../dbus/dbus-message.c line 1362.
This is normally a bug in some application using the D-Bus library.

  D-Bus not built with -rdynamic so unable to print a backtrace
Aborted (core dumped)




coredumpctl debug

       Message: Process 2234616 (mame) of user 1000 dumped core.
                
                Stack trace of thread 2234616:
                #0  0x00007f9fcc95318b __GI_raise (libc.so.6 + 0x4618b)
                #1  0x00007f9fcc932859 __GI_abort (libc.so.6 + 0x25859)
                #2  0x00007f9fcbeaeed2 n/a (libdbus-1.so.3 + 0xbed2)
                #3  0x00007f9fcbed1570 _dbus_warn_check_failed (libdbus-1.so.3 + 0x2e570)
                #4  0x00007f9fcbec0e52 dbus_message_new_method_call (libdbus-1.so.3 + 0x1de52)
                #5  0x00007f9fce4a8722 n/a (libSDL2-2.0.so.0 + 0xeb722)
                #6  0x00007f9fce4a9259 n/a (libSDL2-2.0.so.0 + 0xec259)
                #7  0x00007f9fce4aa076 n/a (libSDL2-2.0.so.0 + 0xed076)
                #8  0x00007f9fce4aa1d5 n/a (libSDL2-2.0.so.0 + 0xed1d5)
                #9  0x00007f9fce4a9697 n/a (libSDL2-2.0.so.0 + 0xec697)
                #10 0x00007f9fce49665f n/a (libSDL2-2.0.so.0 + 0xd965f)
                #11 0x00007f9fce49d45b n/a (libSDL2-2.0.so.0 + 0xe045b)
                #12 0x00007f9fce46ff6b n/a (libSDL2-2.0.so.0 + 0xb2f6b)
                #13 0x00007f9fce3df8e7 n/a (libSDL2-2.0.so.0 + 0x228e7)
                #14 0x00005633534052fa _ZN17sdl_osd_interface4initER15running_machine (mame + 0x973c2fa)
                #15 0x00005633573faee1 _ZN15running_machine5startEv (mame + 0xd731ee1)
                #16 0x00005633573fce4e _ZN15running_machine3runEb (mame + 0xd733e4e)
                #17 0x0000563353502339 _ZN20mame_machine_manager7executeEv (mame + 0x9839339)
                #18 0x00005633535b3c7e _ZN12cli_frontend15start_executionEP20mame_machine_managerRKSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS8_EE (mame + 0x98eac7e)
                #19 0x00005633535b3f12 _ZN12cli_frontend7executeERSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS6_EE (mame + 0x98eaf12)
                #20 0x00005633534ffd7a _ZN13emulator_info14start_frontendER11emu_optionsR13osd_interfaceRSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaISA_EE (mame + 0x9836d7a)
                #21 0x000056334e7ff07f main (mame + 0x4b3607f)
                #22 0x00007f9fcc9340b3 __libc_start_main (libc.so.6 + 0x270b3)
                #23 0x000056334e8ec50e _start (mame + 0x4c2350e)

It's not that big of a deal, I just try again and it will launch without issue.

lsb_release -a
Distributor ID: Ubuntu
Description: Ubuntu 20.04.3 LTS
Release: 20.04
Codename: focal

I see that other apps will see this with SDL:

https://bugs.launchpad.net/ubuntu/+source/libsdl2/+bug/1775067