Comment 2 for bug 1764860

StacktraceTop:
 _dbus_abort () at ../../../dbus/dbus-sysdeps.c:93
 _dbus_warn_check_failed (format=format@entry=0x7f1875ac87c8 "arguments to %s() were incorrect, assertion \"%s\" failed in file %s line %d.\nThis is normally a bug in some application using the D-Bus library.\n") at ../../../dbus/dbus-internals.c:281
 _dbus_warn_return_if_fail (function=function@entry=0x7f1875ac71b0 <__func__.5319> "dbus_message_iter_append_basic", assertion=assertion@entry=0x7f1875ac64b8 "_dbus_check_is_valid_utf8 (*string_p)", file=file@entry=0x7f1875ac6a1d "../../../dbus/dbus-message.c", line=line@entry=2754) at ../../../dbus/dbus-internals.c:936
 dbus_message_iter_append_basic (iter=0x7ffcaf592190, type=115, value=0x7ffcaf592168) at ../../../dbus/dbus-message.c:2754
 main (argc=<optimized out>, argv=<optimized out>) at dbus.c:369