i have got a message error for my map custom : "Warning you have placed exactly 1 dog struct this zone (start_zone) this will cause a script_runtime error unless you have installed the ugx modtools patch or place at least one additional riser struct for this zone"

This means you didn't place spawner in your map. Happened to me when i was testing my map yesterday. It kept spamming on my upper-left side.

i have got a message error for my map custom : "Warning you have placed exactly 1 dog struct this zone (start_zone) this will cause a script_runtime error unless you have installed the ugx modtools patch or place at least one additional riser struct for this zone"

Basically I am pretty sure there is an issue where if there is only 1 dog spawner in a zone, it will glitch, and ugx has added that warning. So Just put atleast 2 dog spawners in every zone... The error should go