Hello.
This means that you have an event that runs in an endless loop (e.g. Label with Jump to Label or Loop without Break) without calling “Wait 0.0”. This is harmless but wastes lots of CPU time.
The interpreter stops such an event after 10000 commands were executed and then continues it in the next frame.
Event 0 is a bit hard to tell. This is either from a previous map or a common event (autostart or parallel process).
Event 13 is event 13 on the current map.
So the solution: Find Parallel running events that use a “Label - jump-to-label” loop or a normal “Loop” without a “Break” and put in it a “Wait 0.0”. The Wait 0 suspends the event for this frame (the same the 10000-command limit does, but much earlier).