If you press the idle worker command, this warning is showed. WARNING: IGUIObject: setting sprite_pressed was not found on an objectERROR: JavaScript error: gui/session/session.js line 977 Error: Invalid GUIObject property 'sprite_pressed' @gui/session/session.js:977 minimapButtonAction("idle","pressed")@gui/session/session.js:977 __eventhandler153 (press)([object Object])@__internal(123) press:0WARNING: IGUIObject: setting sprite_pressed was not found on an objectERROR: JavaScript error: gui/session/session.js line 977 Error: Invalid GUIObject property 'sprite_pressed' @gui/session/session.js:977 minimapButtonAction("idle","pressed")@gui/session/session.js:977 __eventhandler153 (press)([object Object])@__internal(123) press:0