Help some bug/error

[chromus28]

what is this error/bug

 

[Warning]: npc_event: player's event queue is full, can't add event 'PVPLADDER::OnPCLoginEvent' !
[Warning]: npc_event: player's event queue is full, can't add event 'healerdup::OnTouch' !
[Error]: npc_click: npc_id != 0

 

[Emistry]

src/map/map.h#L42

increase the value and recompile.

[Alex-Games]

In 2020 yer in rAthena what value must be increased?