About Warning messages

Hi, I was working with Stan, when I press the calculation buttom the warning message
showed up, but I can not see the list with messages. It used to show up at the bottom of the window, but now -I don´t know why- i can´t see it. Somebody can help me?

You might have closed the trace output window unintentionally. You can bring it back by either

• setting the tick under "View > Trace Output" or
• clicking the button "Reset to Defaults" under "Extras > Options"