If you have installed the latest installer and have used the code files, this error will not generate as this issue is sorted out in the recent installer. It was informed to the RC.

This error is mainly because of the pin type. If you place the cursor on the component and press "Ctrl+E" and edit the pin configuration, then the pin type is open emitter and open collector. You need to change the pin type to passive by pressing "E" on the pins.

Once open emitter then we need to connect a pull-down resistor to emitter and then connect it to GND. This will sort the error, but the design will not reflect the design incorporated in Spoken Tutorial.