xml error when publishing simulator

[rayenhidri27]

i try to use your application, but when i publish the simulator, i have an xml error

im running sf 4.4.25 G6K : 4.48 php 7.4 MySQL 5.7 win 10 local env : wamp 3.2

also i wanna know what i must do after publishing the simulator to use it (it's not mentioned in the doc, it'll be nice if u add it)